Question: Who is associated to Publius Servilius Vatia Isauricus  and Marcus Calpurnius Bibulus?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/ontology/associate> <http://dbpedia.org/resource/Publius_Servilius_Vatia_Isauricus_(consul_48_BC)> . ?uri <http://dbpedia.org/ontology/associate> <http://dbpedia.org/resource/Marcus_Calpurnius_Bibulus> . }