Question: when s the {point in time} for {Bank of China} has {owned by} as {National Council for Social Security Fund} ?
Paraphrase: At what time was Bank of China owned as National Council for Social Security Fund?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q790068 p:P127 ?s . ?s ps:P127 wd:Q6971896 . ?s pq:P585 ?value}