what is the {point in time} for {Astrid Lindgren} has {award received} as {Zilveren Griffel} ?
Tell me when Astrid Lindgren received an award as Zilveren Griffel?
When did Astrid Lindgren receive an award as Zilveren Griffel?
SELECT ?u WHERE { ?g property:award_received resource:Zilveren_Griffel . ?g property:point_in_time ?u . resource:Astrid_Lindgren property:award_received ?g }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q55767> .
?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/Q2285862> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q55767 p:P166 ?s . ?s ps:P166 wd:Q2285862 . ?s pq:P585 ?value}