What is {award received} of {Joseph E. Stiglitz} that is {point in time} is {1979-1-1} ?
In 1979 Joseph E. Stiglitz received what award?
What award did Joseph E. Stiglitz receive at the start of 1979?
SELECT ?s WHERE { ?e property:point_in_time ?s . resource:Joseph_E._Stiglitz property:award_received ?e . ?e property:award_received ?s . FILTER ( CONTAINS ( YEAR ( ?s ) , '1979' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q18430> .
?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> ?obj .
?statement <http://www.wikidata.org/entity/P585> <1979-1-1>
} 

SELECT ?obj WHERE { wd:Q18430 p:P166 ?s . ?s ps:P166 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1979')) }