Question: when did the human development index increased to 0.477 in Benin?
Paraphrase: On what date did the Human Development Index in Benin increase to 0.477?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q962 p:P1081 ?s . ?s ps:P1081 ?x filter(contains(?x , '0.477')) . ?s pq:P585 ?value}