Question: Who was Alfred L. Kroeber employed by until 1945?
Paraphrase: What company did Alfred L. Kroeber work for until the year 1945?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q311538 p:P108 ?s . ?s ps:P108 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1945')) }