What is {population} of {Cambridge, Massachusetts} that is {point in time} is {1880-0-0} ?
What is the number of inhabitants in Cambridge, Massachusetts in the year 1880?
What is the population of Cambridge, Massachusetts in the year 1880?
SELECT ?n WHERE { ?w property:population ?n . FILTER ( CONTAINS ( YEAR ( ?w ) , '1880' ) ) . resource:Cambridge property:population ?w . ?w property:point_in_time ?w }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q49111> .
?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> <1880-0-0>
} 

SELECT ?obj WHERE { wd:Q49111 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1880')) }