what is the {point in time} for {Leigh Matthews} has {award received} as {Coleman Medal} ?
When was the Coleman Medal awarded to Leigh Matthews?
When was Leigh Matthews awarded as Coleman Medal?
SELECT ?w WHERE { resource:Leigh_Matthews property:award_received ?j . ?j property:point_in_time ?w . ?j property:award_received resource:Coleman_Medal }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q6519630> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P166> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q5143019> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q6519630 p:P166 ?s . ?s ps:P166 wd:Q5143019 . ?s pq:P585 ?value}