Freebase SPARQL 查询模板

查询Freebase实体ns:m.054c1的英文名称。

PREFIX ns: <http://rdf.freebase.com/ns/>
select distinct ?name 
where {
  ns:m.054c1 ns:type.object.name ?name.
  FILTER(LANGMATCHES(LANG(?name), "en")).
}

查询具有英文名称"Michael Jordan"@en的Freebase实体。

PREFIX ns: <http://rdf.freebase.com/ns/>
select distinct ?entity
where { 
  ?entity ns:type.object.name "Michael Jordan"@en.
}

查询具有英文名称"Michael Jordan"@en的Freebase实体数量。

PREFIX ns: <http://rdf.freebase.com/ns/>
select (count(?entity) as ?cnt) 
where {
  select distinct ?entity
  where { 
    ?entity ns:type.object.name "Michael Jordan"@en.
  }
}