Question: What is {population} of {Crimean Peninsula} where {point in time} is {1989-1-1} ?
Paraphrase: What was the population of the Crimean Peninsula in 1989?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q7835 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1989')) }