I want to query a class "Soto Kebumen" based on the subclass with sparql
I have tried this query, but it cant query both "makanan_Dari some Jawa_Tengah" and
"memiliki_Bahan some Bunga_Brokoli"
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX kb: <http://www.qassobi.uns.ac.id/kebudayaan#>
PREFIX bm: <http://www.qassobi.uns.ac.id/bahan_makanan#>
PREFIX wl: <http://www.qassobi.uns.ac.id/wilayah#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
SELECT ?makanan
WHERE { ?makanan rdfs:subClassOf* kb:Makanan_Daerah .
?makanan rdfs:subClassOf [
owl:onProperty kb:makanan_Dari;
owl:someValuesFrom wl:Jawa_Tengah;
] .
?makanan rdfs:subClassOf [
owl:onProperty kb:memiliki_Bahan;
owl:someValuesFrom bm:Bunga_Kol;
]
}
But, it return a result if I only query one of each..
SELECT ?makanan
WHERE { ?makanan rdfs:subClassOf* kb:Makanan_Daerah .
?makanan rdfs:subClassOf [
owl:onProperty kb:makanan_Dari;
owl:someValuesFrom wl:Jawa_Tengah;
]
and
SELECT ?makanan
WHERE { ?makanan rdfs:subClassOf* kb:Makanan_Daerah .
?makanan rdfs:subClassOf [
owl:onProperty kb:memiliki_Bahan;
owl:someValuesFrom bm:Bunga_Kol;
] }
How to query multiple subclass property and get the above result?
Related
I recently started working with Linked Data and SPARQL.
I've a dataset which contains unittext, indicating what kind of unit the property has (meters, kilograms and so on).
The unit is a values which is inserted on the relationship between object and its quantitative property.
In my RDF dataset the units are included in a blank node and indicated by https://schema.org/unitText.
An example of the data set is included below.
], [
a owl:Restriction ;
owl:minCardinality "0"^^xsd:nonNegativeInteger ;
owl:onProperty <https://someuri> ;
ns1:unitText "kg"
How can I select this property?
The query so far is:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX sh: <http://www.w3.org/ns/shacl#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
select distinct ?label ?aspect ?datatype where {
?s rdfs:subClassOf/owl:onProperty ?aspect .
?aspect rdf:type owl:ObjectProperty.
?aspect skos:prefLabel ?label .
?aspect rdfs:range ?datatype .
FILTER EXISTS{ ?aspect rdfs:range ?datatype. }
VALUES ?datatype {
xsd:string
xsd:gYear
xsd:boolean
xsd:decimal
xsd:integer
xsd:date
}
}
The RDF dataset looks actually like this:
rdfs:subClassOf [ a owl:Restriction ;
owl:minCardinality "0"^^xsd:nonNegativeInteger ;
owl:onProperty <someuri> ;
<https://schema.org/unitText> "kg"
] ;
I have this query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX curricula: <http://www.semanticweb.org/lsarni/ontologies/curricula#>
SELECT ?topic (COUNT(?x) as ?number_of_courses)
WHERE {
?topic curricula:taughtIn ?x .
}
GROUP BY ?topic
ORDER BY desc(?number_of_courses)
That returns:
Now I want to get the ?topic with the max ?number_of_courses, in this case Engineering
I managed to get the max ?number_of_courses with this query (following this answer):
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX curricula: <http://www.semanticweb.org/lsarni/ontologies/curricula#>
SELECT (MAX(?number_of_courses) AS ?maxc)
WHERE{
{
SELECT ?topic (COUNT(?x) as ?number_of_courses)
WHERE {
?topic curricula:taughtIn ?x .
}
GROUP BY ?topic
}
}
This returns:
But I can't manage to get the ?topic.
How could I fix this?
Update
I tried what I understood from AKSW comment:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX curricula: <http://www.semanticweb.org/lsarni/ontologies/curricula#>
SELECT ?topic
WHERE {
?topic curricula:taughtIn ?x .
{
SELECT (MAX(?number_of_courses) AS ?max)
WHERE {
{
SELECT ?topic (COUNT(?x) as ?number_of_courses)
WHERE {
?topic curricula:taughtIn ?x .
}
GROUP BY ?topic
}
}
}
}
GROUP BY ?topic
HAVING (COUNT(?x) = ?max)
But it returns nothing.
Example
For this minimal example the result should be Topic_2 since it's taughtIn two courses.
#prefix : <http://www.semanticweb.org/lsarni/ontologies/curricula#> .
#prefix owl: <http://www.w3.org/2002/07/owl#> .
#prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
#prefix xml: <http://www.w3.org/XML/1998/namespace> .
#prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
#prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
#base <http://www.semanticweb.org/lsarni/ontologies/curricula> .
<http://www.semanticweb.org/lsarni/ontologies/curricula> rdf:type owl:Ontology .
#################################################################
# Object Properties
#################################################################
### http://www.semanticweb.org/lsarni/ontologies/curricula#taughtIn
:taughtIn rdf:type owl:ObjectProperty ;
rdfs:subPropertyOf owl:topObjectProperty .
### http://www.w3.org/2002/07/owl#topObjectProperty
owl:topObjectProperty rdfs:domain :Topic ;
rdfs:range :Course .
#################################################################
# Classes
#################################################################
### http://www.semanticweb.org/lsarni/ontologies/curricula#Course
:Course rdf:type owl:Class ;
owl:disjointWith :Topic .
### http://www.semanticweb.org/lsarni/ontologies/curricula#Topic
:Topic rdf:type owl:Class .
#################################################################
# Individuals
#################################################################
### http://www.semanticweb.org/lsarni/ontologies/curricula#Course_1
:Course_1 rdf:type owl:NamedIndividual ,
:Course .
### http://www.semanticweb.org/lsarni/ontologies/curricula#Course_2
:Course_2 rdf:type owl:NamedIndividual ,
:Course .
### http://www.semanticweb.org/lsarni/ontologies/curricula#Topic_1
:Topic_1 rdf:type owl:NamedIndividual ,
:Topic ;
:taughtIn :Course_1 .
### http://www.semanticweb.org/lsarni/ontologies/curricula#Topic_2
:Topic_2 rdf:type owl:NamedIndividual ,
:Topic ;
:taughtIn :Course_1 ,
:Course_2 .
### Generated by the OWL API (version 4.2.8.20170104-2310) https://github.com/owlcs/owlapi
I want to get all the pizza names which has cheese toppings but the result shows (_:b0) which is kind of an owl restriction following is my query
PREFIX pizza: <http://www.co-ode.org/ontologies/pizza/pizza.owl#>
SELECT ?X WHERE {
?X rdfs:subClassOf* [
owl:onProperty pizza:hasTopping ;
owl:someValuesFrom pizza:CheeseTopping
]
}
using Pizza ontology from stanford
This works (Without reasoning enabled)
PREFIX pizza: <http://www.co-ode.org/ontologies/pizza/pizza.owl#>
SELECT ?X ?topping WHERE {
?X rdfs:subClassOf ?Y .
?Y owl:someValuesFrom ?topping .
?topping rdfs:subClassOf* pizza:CheeseTopping
}
ORDER BY ?X
Some are listed more than once as they could contain more than one CheeseTopping. To remove duplicates:
PREFIX pizza: <http://www.co-ode.org/ontologies/pizza/pizza.owl#>
SELECT DISTINCT ?X WHERE {
?X rdfs:subClassOf ?Y .
?Y owl:someValuesFrom ?topping .
?topping rdfs:subClassOf* pizza:CheeseTopping
}
ORDER BY ?X
This works if you enable a reasoner:
PREFIX pizza: <http://www.co-ode.org/ontologies/pizza/pizza.owl#>
SELECT DISTINCT ?X WHERE {
?X rdfs:subClassOf pizza:CheeseyPizza
}
Ref:
Used the pizza ontology from here: http://protege.stanford.edu/ontologies/pizza/pizza.owl
That query works but is really complex and might be incomplete because some pizzas use complex OWL constructs:
PREFIX pizza: <http://www.co-ode.org/ontologies/pizza/pizza.owl#>
SELECT DISTINCT ?pizza WHERE {
{
?pizza rdfs:subClassOf* pizza:Pizza .
?pizza owl:equivalentClass|rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty pizza:hasTopping ;
owl:someValuesFrom/rdfs:subClassOf* pizza:CheeseTopping
]
} UNION {
?pizza owl:equivalentClass _:b0 .
_:b0 rdf:type owl:Class ;
owl:intersectionOf _:b1 .
_:b1 (rdf:rest)*/rdf:first ?otherClass.
?otherClass rdf:type owl:Restriction ;
owl:onProperty pizza:hasTopping ;
owl:someValuesFrom/rdfs:subClassOf* pizza:CheeseTopping
}
}
My query returns result dependent on which one of two sparql OPTIONS clauses come first for a List of Images. Although using Jena ARQ is not an option at this point, and I'd like to solve this with a pure SPARQL query, still I'd like to know how it could be solved with Jena as well.
My data presentation is attached below, the data may contain a list of images. My image representation is also below. I'm attaching my query as well.
The sprql query has two variables urlX, and urlY declared in the 2 OPTIONS blocks, if a List of images exists. Depending on which of the OPTIONS comes first, I get the value for that one variable, while the other one doesn't get reached. It seems the issue has to do with using OPTIONS clause. I'm not sure what else I can try instead, I'm far from being an expert on sparql queries. I want the query to do the following: if a collection of images is present, I want to see if both image sizes (dc:conformsTo) are present and get both urlX and urlY values, or get the ones that exist. Much appreciate your time.
My data representation:
#prefix dc: <http://purl.org/dc/terms/> .
#prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
#prefix lews: <http://lews.com/content/> .
#prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
lews:26331340 lews:name "the Human Good Luck Charm is Back"^^xsd:token ;
dc:created "2014-10-20T17:14:55.357-07:00"^^xsd:dateTime ;
dc:identifier "26331340"^^xsd:int ;
dc:modified "2016-08-04T13:43:00.897-07:00"^^xsd:dateTime ;
dc:title "the Human Good Luck Charm is Back" ;
dc:hasPart <http://lews.com/content/26331340#Images> ;
dc:abstract "As the World Series gets underway..." ;
dc:description "The super fan who rooted for the Royals is back to boost morale." ;
dc:subject "hoping for a World Series victory".
<http://lews.com/content/26331340#Images> dc:identifier "Images"^^xsd:token ;
rdf:first lews:26331375 ;
rdf:rest _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331376 ;
rdf:li <http://lews.com/content/26331340#Images> , _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331376 , _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331377 , _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331378 , _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331379 , _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331380 ;
a rdf:List .
_:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331376 rdf:first lews:26331376 ;
rdf:rest _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331377 .
_:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331377 rdf:first lews:26331377 ;
rdf:rest _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331378 .
_:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331378 rdf:first lews:26331378 ;
rdf:rest _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331379 .
_:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331379 rdf:first lews:26331379 ;
rdf:rest _:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331380 .
_:genid-15e530b0195547d9ac3f8e5e6785a747-x26331340Images26331380 rdf:first lews:26331380 ;
rdf:rest rdf:nil .
My image representation:
#prefix dc: <http://purl.org/dc/terms/> .
#prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
#prefix lews: <http://abcnews.com/content/> .
#prefix mrss: <http://search.yahoo.com/mrss/> .
#prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
lews:26331376 lews:name "141020_wn_donvan0_704x396.jpg"^^xsd:token ;
lews:section "wnt"^^xsd:token ;
lews:type "Image"^^xsd:token ;
dc:conformsTo "704x396"^^xsd:token ;
dc:created "2014-10-20T17:15:09.637-07:00"^^xsd:dateTime ;
dc:hasFormat <http://lews.go.com/images/WNT/141020_wn_donvan0_704x396.jpg> ;
dc:identifier "26331376"^^xsd:int ;
dc:isPartOf <http://lews.go.com/WNT> ;
dc:modified "2014-10-20T17:15:09.947-07:00"^^xsd:dateTime ;
dc:type "StillImage"^^xsd:token ;
mrss:height "396"^^xsd:int ;
mrss:width "704"^^xsd:int ;
xsd:date "2014-10-20"^^xsd:date ;
xsd:gMonthDay "--10-20"^^xsd:gMonthDay ;
xsd:gYear "2014"^^xsd:gYear ;
xsd:gYearMonth "2014-10"^^xsd:gYearMonth .
My query:
PREFIX dc: <http://purl.org/dc/terms/>
PREFIX mrss: <http://search.yahoo.com/mrss/>
PREFIX search: <http://www.openrdf.org/contrib/lucenesail#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX lews: <http://abcnews.com/content/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
SELECT ?id ?title ?description ?urlX ?urlY ?section ?imgName
?subject dc:identifier ?id.
OPTIONAL {?subject dc:title ?title.}
OPTIONAL {?subject dc:description ?description.}
OPTIONAL {?subject dc:isPartOf ?section.}
OPTIONAL {
?subject dc:hasPart ?imageCol.
?imageCol dc:identifier "Images"^^xsd:token.
OPTIONAL{
?imageCol rdf:li ?bnode.
?bnode rdf:first ?image.
?image lews:name ?imgName;
dc:conformsTo "4x3";
dc:hasFormat ?urlX.
}
OPTIONAL{
?imageCol rdf:li ?bnode.
?bnode rdf:first ?image.
?image lews:name ?imgName;
dc:conformsTo "16x9";
dc:hasFormat ?urlY.
}
}
}
LIMIT ${limit}
If I understood correctly what it is you want, you just need to group the optionals differently:
PREFIX dc: <http://purl.org/dc/terms/>
PREFIX mrss: <http://search.yahoo.com/mrss/>
PREFIX search: <http://www.openrdf.org/contrib/lucenesail#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX lews: <http://abcnews.com/content/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
SELECT ?id ?title ?description ?urlX ?urlY ?section ?imgName {
?subject dc:identifier ?id.
OPTIONAL { ?subject dc:title ?title. }
OPTIONAL { ?subject dc:description ?description. }
OPTIONAL { ?subject dc:isPartOf ?section. }
OPTIONAL {
?subject dc:hasPart ?imageCol.
?imageCol dc:identifier "Images"^^xsd:token.
OPTIONAL {
?imageCol rdf:li ?bnode.
?bnode rdf:first ?image.
?image lews:name ?imgName;
# Here we optionally bind ?urlX and/or ?urlY
OPTIONAL {
?image dc:conformsTo "4x3";
dc:hasFormat ?urlX.
}
OPTIONAL {
?image dc:conformsTo "16x9";
dc:hasFormat ?urlY.
}
}
}
}
I am studying the inference in OWL, currently the restriction in domain definition:
#prefix : <http://www.test.org/2015/4/ontology#> .
#prefix owl: <http://www.w3.org/2002/07/owl#> .
#prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
#prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
#base <http://www.test.org/2015/4/ontology> .
<http://www.test.org/2015/4/ontology> rdf:type owl:Ontology .
:Class1 rdf:type owl:Class .
:Prop1 rdf:type owl:DatatypeProperty ;
rdfs:domain [ rdf:type owl:Class ;
owl:intersectionOf ( :Class1
[ rdf:type owl:Restriction ;
owl:onProperty :Prop1 ;
owl:hasValue "class1"
]
)
] .
:Ind1 rdf:type owl:NamedIndividual ;
:Prop1 "p" .
I've expected that the reasoner (Pellet) infers
:Ind1 rdf:type :Class1
only if there is
:Ind1 :Prop1 "class1"
but it seems to ignore the restriction in the domain definition.
Is it correct to define restrictions in damain definitions? The reasoner (Pellet) does not forbid me to do that.