What is {country} of {Oskemen} that is {start time} is {1991-12-16} ?
What territory was Oskemen involved in establishing on December 16, 1991?
What country was Oskemen a part of starting on December 16, 1991?
SELECT ?l WHERE { ?g property:start_time ?y . FILTER ( CONTAINS ( YEAR ( ?y ) , '1991' ) ) . resource:Oskemen property:country ?g . ?g property:country ?l }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q162548> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P17> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1991-12-16>
} 

SELECT ?obj WHERE { wd:Q162548 p:P17 ?s . ?s ps:P17 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1991')) }