what is the {point in time} for {William Henry Bragg} has {award received} as {Rumford Medal} ?
In what year did William Henry Bragg win a Rumford Medal?
When did William Henry Bragg receive a Rumford Medal?
SELECT ?h WHERE { resource:William_Henry_Bragg property:award_received ?s . ?s property:point_in_time ?h . ?s property:award_received resource:Rumford_Medal }
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?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q133747 p:P166 ?s . ?s ps:P166 wd:Q285167 . ?s pq:P585 ?value}