2001-04 was the date when which file format was created?
Entity Entity
m.01jp81 m.072vxx
BitTorrent Extensible Metadata Platform
class literal
computer.file_format 2001-04^^http://www.w3.org/2001/XMLSchema#gYearMonth
computer.file_format type.datetime
File Format 2001-04
none none
computer.file_format.creation_date
Creation Date
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 :computer.file_format . 
VALUES ?x1 { "2001-04-08:00"^^<http://www.w3.org/2001/XMLSchema#gYearMonth> } 
?x0 :computer.file_format.creation_date ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND computer.file_format (JOIN computer.file_format.creation_date 2001-04^^http://www.w3.org/2001/XMLSchema#gYearMonth))