Question: List the birth city of the politicians of Democratic Party.
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:party <http://dbpedia.org/resource/Democratic_Party_(United_States)> . ?x onto:birthPlace ?uri  . ?x rdf:type onto:Politician}