Question: What was owned by world trade center at the period of 2000-7-01?
Paraphrase: What was the activity of World Trade Center at 2000-7-01?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q11235 p:P127 ?s . ?s ps:P127 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'2001')) }