on 2007-04-28, which amusement ride was opened?
Entity
m.0ddgjx3
Kvasten
class literal
amusement_parks.ride 2007-04-28^^http://www.w3.org/2001/XMLSchema#date
amusement_parks.ride type.datetime
Amusement Ride 2007-04-28
none none
amusement_parks.ride.opened
Opened
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 :amusement_parks.ride . 
VALUES ?x1 { "2007-04-28-08:00"^^<http://www.w3.org/2001/XMLSchema#date> } 
?x0 :amusement_parks.ride.opened ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND amusement_parks.ride (JOIN amusement_parks.ride.opened 2007-04-28^^http://www.w3.org/2001/XMLSchema#date))