What is {area} of {Stuttgart} that is {point in time} is {1977-0-0} ?
What was the area of Stuttgart in 1977?
SELECT ?obj WHERE { wd:Q1022 p:P2046 ?s . ?s ps:P2046 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1977')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1022> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2046> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P585> <1977-0-0>
} 

In 1977, what was the area of Stuttgart?