ASK WHERE { <http://dbpedia.org/resource/Ganymede_(moon)> <http://dbpedia.org/property/discoverer> <http://dbpedia.org/resource/Galileo_Galilei> }
Was Ganymede discovered by Galileo Galilei?
ASK WHERE { resource:Ganymede_(moon) property:discoverer resource:Galileo_Galilei }
Yes
[Yes], Galileo Galilei is the discoverer of Ganymede.
[Yes], Galileo Galilei discovered Ganymede.