What is {employer} of {Alfred L. Kroeber} that is {end time} is {1945-0-0} ?
Who was Alfred L. Kroeber employed by until 1945?
SELECT ?obj WHERE { wd:Q311538 p:P108 ?s . ?s ps:P108 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1945')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q311538> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P108> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P582> <1945-0-0>
} 

What company did Alfred L. Kroeber work for until the year 1945?