Generating SPARQL: example query

query.rq

PREFIX dbo:  <http://dbpedia.org/ontology/>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>

SELECT ?person
       (SAMPLE(?_name) AS ?name)
       (SAMPLE(?_birthDate) AS ?birthDate)
       (SAMPLE(?_deathDate) AS ?deathDate)
WHERE {
  {
    SELECT ?person
    WHERE {
      {
        SELECT DISTINCT ?person
        WHERE {
          ?person a foaf:Person ;
            foaf:name [] ;
            dbo:birthDate [] .
        }
        ORDER BY ?person
      }
    }
    LIMIT 10000
    OFFSET 0
  }
  ?person foaf:name ?_name ;
    dbo:birthDate ?_birthDate .
  OPTIONAL {
    ?person dbo:deathDate ?_deathDate .
  }
}
GROUP BY ?person