What is {population} of {Verona} that is {point in time} is {1981-0-0} ?
In 1981, how many people lived in Verona?
What was Verona's population in 1981?
SELECT ?z WHERE { FILTER ( CONTAINS ( YEAR ( ?r ) , '1981' ) ) . resource:Verona property:population ?y . ?y property:population ?z . ?y property:point_in_time ?r }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2028> .
?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> <1981-0-0>
} 

SELECT ?obj WHERE { wd:Q2028 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1981')) }