on 1990, which top level domain was introduced?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.04l27f m.0412vp m.047022 m.0475hg m.03v1kj m.04k44n m.03y30h m.01qhb6 m.03y2yz m.04l3nj
lk za eg uy pl hu su hk cs ph
class literal
internet.top_level_domain 1990^^http://www.w3.org/2001/XMLSchema#gYear
internet.top_level_domain type.datetime
Top Level Domain 1990
none none
internet.top_level_domain.introduced
Introduced
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :internet.top_level_domain . 
VALUES ?x1 { "1990-08:00"^^<http://www.w3.org/2001/XMLSchema#gYear> } 
?x0 :internet.top_level_domain.introduced ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND internet.top_level_domain (JOIN internet.top_level_domain.introduced 1990^^http://www.w3.org/2001/XMLSchema#gYear))