How to List the laureate awards (given by their label) for which the description of the contribution (given by nobel:motivation) contains the word "human" together with the word "peace" (i.e., both words must be there).
I have use the bds:search namespace from the the full-text search feature of Blazegraph.
After visiting this link i have composed this query
Free text search in sparql when you have multiword and scaping character
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX bds: <http://www.bigdata.com/rdf/search#>
PREFIX nobel: <http://data.nobelprize.org/terms/>
SELECT ?awards ?description
WHERE {
?entity rdfs:label ?awards .
?entity nobel:motivation ?description .
FILTER ( bds:search ( ?description, '"human" AND "peace"' ) )
}
This query is returning me the following error on execution shown in image.
Error Image
How to correct this query and get the desired result?
You may take a look at the specification of this dataset or download an RDF dump of the dataset
Use bds:search to search for "human" category.Then apply filter and contain function to "peace".
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX bds: <http://www.bigdata.com/rdf/search#>
PREFIX nobel: <http://data.nobelprize.org/terms/>
PREFIX bif: <http://www.openlinksw.com/schemas/bif#>
SELECT ?awards ?description
WHERE {
?entity rdfs:label ?awards .
?entity nobel:motivation ?description .
?description bds:search "human" .
FILTER (CONTAINS(?description, "peace"))
}
Related
I am working from this example, and I want to archieve the same, however with a different topic - Climate change
All i need to output is the abstract from this page: http://dbpedia.org/page/Climate_change
PREFIX dbp-res: <http://dbpedia.org/resource/>
PREFIX dbp-ont: <http://dbpedia.org/ontology/>
PREFIX dbp-prop: <http://dbpedia.org/property/>
SELECT *
WHERE
{
?Resource a dbp-ont:Agent .
?Resource dbp-ont:abstract ?Description .
?Resource rdfs:label ?Label .
FILTER( STR(?Label) = 'Climate_change' )
FILTER (langMatches(lang(?Description),'en'))
FILTER (langMatches(lang(?Label),'en'))
}
The problem seems to be the Agent, but I have no clue, as to what to replace it with.
My query
I need to get all awarded movies on 80th Award Ceremony
I tried to write SPARQL query:
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix dbpedia-owl: <http://dbpedia.org/ontology/>
prefix movie: <http://data.linkedmdb.org/resource/movie/>
prefix award: <http://data.linkedmdb.org/page/film_awards_ceremony/180/>
select distinct ?film ?award where {
{ ?film a movie:film.
?award a movie:film_awards_ceremony.
} union
{ ?film a dbpedia-owl:Film }
?film rdfs:label ?label .
}
But the result is full movies list.
I found the data I need also here: https://www.freebase.com/m/02pgky2
How to combine (union) these entities in a right way ?
If is not possible - How to get the result from freebase using SPARQL and dbpedia.org?
I'm trying to obtain all records between certain dates. The date field has appears in this format: 2012-01-31. I think it is of type: <http://www.w3.org/2001/XMLSchema#date>
How would I modify the query below to extract records with date greater than 2012-01-31 please?
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
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#>
PREFIX lrppi: <http://landregistry.data.gov.uk/def/ppi/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX lrcommon: <http://landregistry.data.gov.uk/def/common/>
SELECT ?county ?postcode ?amount ?date
WHERE
{
?transx lrppi:pricePaid ?amount .
?transx lrppi:transactionDate ?date .
?transx lrppi:propertyAddress ?addr.
?addr lrcommon:postcode "PL6 8RU"^^xsd:string .
?addr lrcommon:postcode ?postcode .
# Cant get this line to work
# ?date lrppi:transactionDate ?date . FILTER ( ?date >= "1327968000"^^xsd:date )
OPTIONAL {?addr lrcommon:county ?county .}
}
ORDER BY ?postcode
If you want to play with this, you can enter your query here:
http://landregistry.data.gov.uk/landregistry/sparql/sparql.html
This is what the FILTER clause is designed for.
The Expressions and Testing Values section of the SPARQL specification covers this in detail, pretty much the first example in that section covers filtering on dates.
Edit
If you are new to SPARQL then I would recommend you read a good SPARQL tutorial like SPARQL by Example which is written by one of the specification authors. This will walk you through various parts of SPARQL and should help you get your head around the RDF data model and query language better.
In terms of dates they are represented using XML schema datatypes, for example expressing today as a date would be the following:
"2013-03-22"^^xsd:date
The linked specification covers the lexical form of various datatypes.
So for your example it would be the following:
FILTER ( ?date >= "2012-01-31"^^xsd:date )
If you are starting from a UNIX timestamp and trying to get to an xsd:date see Generating an xsd:dateTime in shell script which may provide a useful starting point.
On this site, for example, take the first SPARQL query and make something very similar:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX p: <http://dbpedia.org/property/>
SELECT *
WHERE {
?name p:name <http://dbpedia.org/resource/Olivier_Theyskens> .
}
Try to execute it: here
And I get no results. However, modify the query to the following:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX p: <http://dbpedia.org/property/>
SELECT *
WHERE {
?name p:name ?otherthing.
}
And I get results, even though they're not the results I want.
Why doesn't the first query work -- what am I doing wrong? :/
In this case, I think it's because you're ordering your query statement backwards.
The DBpedia resource (<http://dbpedia.org/resource/Olivier_Theyskens>) is the Entity or Subject (?s), the property (p:name) is the Attribute or Predicate (?p), and the value of that property (?name) is the Value or Object (?o).
SPARQL expects all statements to be { ?s ?p ?o }, but yours seems to be written as { ?o ?p ?s }...
To sum up, if you try this query --
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX p: <http://dbpedia.org/property/>
SELECT *
WHERE
{
<http://dbpedia.org/resource/Olivier_Theyskens> p:name ?name .
}
-- you'll get the results I think you want.
The problem with your first query is that p:name links to Literal and you try to match a URI.
If you want your first query to work you have to to use the property http://dbpedia.org/ontology/artist that links to the URI and not the literal:
SELECT *
WHERE {
?s <http://dbpedia.org/ontology/artist> <http://dbpedia.org/resource/The_Velvet_Underground> .
}
Notice the different name space for the property <http://dbpedia.org/ontology/artist> this namespace contains ontology instead of property - ontology is the one used for object properties.
I'm trying to use a SPARQL query to retrieve information about a DBpedia resource (a Person). I'd like to use the same query to retrieve data about any Person by parameterizing the resource URI. Since some attributes may not exist for a particular resource, I'm making use of the OPTIONAL statement. Here is my query:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX dbpprop: <http://dbpedia.org/property/>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT DISTINCT ?label ?abstract ?placeOfBirth
?birthPlace ?birthDate ?deathDate ?page ?thumbnail
WHERE {
<http://dbpedia.org/resource/Neil_Simon> rdfs:label ?label ;
dbo:abstract ?abstract ;
foaf:page ?page .
OPTIONAL {
<http://dbpedia.org/resource/Neil_Simon> dbpprop:placeOfBirth ?placeOfBirth ;
dbpprop:birthPlace ?birthPlace ;
dbo:birthDate ?birthDate ;
dbo:deathdate ?deathDate ;
dbo:thumbnail ?thumbnail .
}
FILTER (LANG(?label) = 'en')
FILTER (LANG(?abstract) = 'en')
}
LIMIT 1
I've left everything except label, abstract and page in OPTIONAL, since if I use the same query for another person, they may not have those properties. The problem is, none of those optional attributes are showing up in the results. In Neil Simon's case, you can see that there are values for birthDate, birthPlace and thumbnail: http://dbpedia.org/resource/Neil_Simon. However, those values don't show up when I run the query: DBpedia SPARQL query. What am I doing wrong, and how can I optionally retrieve those properties?
Although you have used an OPTIONAL construct the map pattern itself needs all the attributes within to match. So only if you have birthPlace, birthDate, deathDate and thumbnail the inner optional construct is satisfied
I would suggest breaking the OPTIONAL construct up into multiple OPTIONAL constructs.