Question: When did the Arabian Peninsula have a population of 4.74665e+07?
Paraphrase: At what point was the Arabian Peninsula population recorded as being 4.74665e+07?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q31945 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '4.74665e+07')) . ?s pq:P585 ?value}