Question: Which partner of the Tim Mathieson is also the primeminister of the Mike Kelly (Australian politician) ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Tim_Mathieson> <http://dbpedia.org/ontology/partner> ?uri. <http://dbpedia.org/resource/Mike_Kelly_(Australian_politician)> <http://dbpedia.org/property/primeminister> ?uri}