ASK WHERE { <http://dbpedia.org/resource/Alfred_Kleiner> <http://dbpedia.org/ontology/doctoralStudent> <http://dbpedia.org/resource/Albert_Einstein> }
Was einstein a doctoral student of Alfred Kleiner?
ASK WHERE { resource:Alfred_Kleiner property:doctoral_student resource:Albert_Einstein }
Yes
[Yes], Albert Einstein was a doctoral student of Alfred Kleiner.
[Yes] Albert Einstein was Alfred Clyburn's disciple.
[Yes], Albert Einstein is  the doctoral student of him.
[Yes] Albert Einstein is his graduate student.
[Yes], Albert Einstein is  the doctoral student of the person.
[Yes] Albert Einstein is a disciple of this man.