What is {population} of {Amman} that is {point in time} is {1979-1-1} ?
What was Amman's population on January 1, 1979?
Give me the population of Amman on 1979-1-1?
SELECT ?f WHERE { ?q property:point_in_time ?r . resource:Amman property:population ?q . FILTER ( CONTAINS ( YEAR ( ?r ) , '1979' ) ) . ?q property:population ?f }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q3805> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1082> .
?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:Q3805 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1979')) }