the channel which started before 04/25/2007 is on which network?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
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NRK CNBC City TV Today Network Al Jazeera Televisión Española Univision Telewizja Polska DR Fox International Channels Sociedade Independente de Comunicação ProSiebenSat.1 Media ESPN Disney Channel Fox Sports Networks Cartoon Network TVN MTV3 Australian Broadcasting Corporation Viacom Media Networks YLE Discovery Channel British Broadcasting Corporation TV4 Middle East Broadcasting Center Polsat Comcast SportsNet Kanal 5 Fusion Hallmark Channel Voom HD Networks Rediffusion Geo TV CTV Two Omni Television Global Television Network Sky Italia ZTV Sub TV3 Hum Network Limited Telecom Italia Media Setanta Sports null SBS Television TVBS STAR TV Pay TV StarLightMedia null TV 2 Universal Networks International MTV Italy Showtime Scandinavia Vietnam Television TeleRadio-Moldova Nickelodeon National Television Company of Ukraine Root Sports Nelonen Media Corporació Catalana de Mitjans Audiovisuals Disney Channel Space Shower Networks Inc. AB Groupe Solar News Channel All-Russia State Television and Radio Broadcasting Company Hot Bird TNT null Star! Scandinavia null null
class class literal
tv.tv_network broadcast.tv_channel 2007-04-25^^http://www.w3.org/2001/XMLSchema#date
tv.tv_network broadcast.tv_channel type.datetime
TV Network TV Channel 04/25/2007
none none <
tv.tv_network.channels broadcast.tv_channel.from
Channels From
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 :tv.tv_network . 
?x1 :type.object.type :broadcast.tv_channel . 
FILTER (?x2 < "2007-04-25-08:00"^^<http://www.w3.org/2001/XMLSchema#date>)
?x0 :tv.tv_network.channels ?x1 . 
?x1 :broadcast.tv_channel.from ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND tv.tv_network (JOIN tv.tv_network.channels (lt broadcast.tv_channel.from 2007-04-25^^http://www.w3.org/2001/XMLSchema#date)))