What is {head of government} of {Chemnitz} that is {start time} is {1961-0-0} ?
In 1961, Chemnitz's head of government was whom?
Who was head of government of Chemnitz on 1961?
SELECT ?c WHERE { ?y property:head_of_government ?c . ?y property:start_time ?i . FILTER ( CONTAINS ( YEAR ( ?i ) , '1961' ) ) . resource:Chemnitz property:head_of_government ?y }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2795> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P6> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1961-0-0>
} 

SELECT ?obj WHERE { wd:Q2795 p:P6 ?s . ?s ps:P6 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1961')) }