Question: Who is the {human} for {influenced by} of {J. Robert Oppenheimer}
Paraphrase: For { influenced by } of { J, who is the { human}. Oppenheimer Robert
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P737 wd:Q132537 . ?sbj wdt:P31 wd:Q5 } 
Answer: Robert Serber