Question: Who is the person that was student of Gottfried Wilhelm Leibniz?
Paraphrase: Who studied under Gottfried Wilhelm Leibniz's?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q9047 wdt:P1066 ?obj . ?obj wdt:P31 wd:Q5 } 
Answer: Jakob Thomasius, Erhard Weigel, Bartholomäus Leonhard Schwendendörffer