what is the {point in time} for {Ernst Mayr} has {award received} as {Eisenmann Medal} ?
Ernst Mayr received the EIsenmann Medal in what year?
When was the Eisenmann Medal received by Ernst Mayr?
SELECT ?a WHERE { resource:Ernst_Mayr property:award_received ?v . ?v property:award_received resource:Eisenmann_Medal . ?v property:point_in_time ?a }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q5354> .
?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/Q5349948> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q5354 p:P166 ?s . ?s ps:P166 wd:Q5349948 . ?s pq:P585 ?value}