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June 22, 2017

I want to get all players from a football club and filter those out that are from Germany, I know that it is possible without the filter option, but I'm new to SPARQL and it seems that i don't understand how to use the filter option in that case, so I would be glad if someone could tell a way how to get that working.

SELECT distinct ?player WHERE { ?player a <

June 22, 2017

I have the query

PREFIX rdf: <> PREFIX dbo: <> PREFIX rdfs: <> #select count(DISTINCT ?instance) # The number of suitable instances #select DISTINCT ?instance ?type # Full Ground-truth dataset select DISTINCT ?instance ?domain ?range ?subClassOf #...

June 22, 2017

I want list of countries name from DBpedia.

I am using to execute my query, but till now I have not found all countries name which are available in DBpedia.

For Example : dbr:United_Kingdom, dbr:...

June 19, 2017

I have an exercise in Semantic Web. I must extract some individuals from the DBpedia. These individuals must be inserted into an ontology that I must create. My question is. Can I retrieve individuals from the DBedia?

Let my clarify !

When I send this sparql query

PREFIX dbo: <> SELECT distinct * WHERE { ?album a dbo:Album . } LIMIT...

June 19, 2017

I need the dbpedia datasets (ontology classes) in xml format but I found it in csv and json only at this link .

If any xml or RDF source available, or csv to rdf converter that has no constraint of file...

June 19, 2017

I want to make a SPARQL query which returns a list of all Ontology classes/properties which are related to Person. For eg., like the subclasses (derived from) of Person

<rdfs:subClassOf rdf:resource=""/>

or have a domain/range of Person

<rdfs:domain rdf:resource=""/>.

For example,...

June 18, 2017

I'm trying to query data about a specific person from dbpedia given his wikiPageID. I've tried this SPARQL query to query about Michael Jackson:

PREFIX rdf: <> PREFIX dbo: <> PREFIX dbp: <> PREFIX rdfs: <> SELECT ?name (...

June 16, 2017

I want to to extract neighborhood areas from dbPedia.

Like: I am in Chicago and want to know all major local areas/neighborhood list in particular city.

June 15, 2017

I've been working with DBpedia for a GSoC project. I have to create triples using properties that are stored in another file.

For eg. my main file is and the file with all the rules is

Here's what I'm trying to/want to do:

mapping_rules = { 'family': 'relatedTo', 'singer': 'MusicalArtist', 'writer': 'Author...

June 13, 2017

Why does this SPARQL query return a result:

SELECT * WHERE { ?c <> ?a .} LIMIT 20


While this returns an empty table of columns a and b:

SELECT * WHERE { ?c <> ?a .} LIMIT 20