Question: What was the source of Thales' death on 1-1-546?
Paraphrase: How did Thales die on 1-1-546?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q36303 p:P570 ?s . ?s ps:P570 ?x filter(contains(?x , '-546-1-1')) . ?s pq:P1480 ?value}