which play debuted on 09/21/2013?
Entity
m.0100czwp
Die letzte Kommune
class literal
theater.play 2013-09-21^^http://www.w3.org/2001/XMLSchema#date
theater.play type.datetime
Play 09/21/2013
none none
theater.play.date_of_first_performance
Date of First Performance
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 :theater.play . 
VALUES ?x1 { "2013-09-21-08:00"^^<http://www.w3.org/2001/XMLSchema#date> } 
?x0 :theater.play.date_of_first_performance ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND theater.play (JOIN theater.play.date_of_first_performance 2013-09-21^^http://www.w3.org/2001/XMLSchema#date))