Question: On what military branch Sigmund Jähn served until 1965?
Paraphrase: Sigmund Jahn served in what military branch until 1965?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q57229 p:P241 ?s . ?s ps:P241 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1965')) }