Question: Where was Lujo Brentano a student of Johann von Helferich?
Paraphrase: In what location was Lujo Brentano a student of Johann von Helferich?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q62830 p:P69 ?s . ?s ps:P69 ?obj . ?s pq:P1066 wd:Q5798542 }