what is the {point in time} for {Paul Dirac} has {award received} as {Helmholtz Medal} ?
On which date did Paul Dirac receive the Helmholtz Medal?
When did Paul Dirac receive the Helmholtz Medal?
SELECT ?v WHERE { resource:Paul_Dirac property:award_received ?n . ?n property:point_in_time ?v . ?n property:award_received resource:Helmholtz_Medal }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q47480> .
?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/Q1562616> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q47480 p:P166 ?s . ?s ps:P166 wd:Q1562616 . ?s pq:P585 ?value}