the operating system for powerpc was developed by who?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.0179y m.048kc m.04sv4 m.0k8z m.02vr0b m.02933 m.03sc8 m.06py2 m.045s92 m.0256cr4 g.121_jlrf m.078c7pb m.01xrhjz
Bell Labs Ken Thompson Microsoft Corporation Apple Inc. Mark Shuttleworth Dennis Ritchie IBM Sun Microsystems Canonical OpenBSD Project Judd Vinet Aaron Griffin Debian Project
class class entity
computer.operating_system_developer computer.operating_system m.0620f
computer.operating_system_developer computer.operating_system computer.computer_processor
Operating System Developer Operating System PowerPC
none none none
computer.operating_system.developer computer.operating_system.supported_architectures
Developer Supported Architectures
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.operating_system_developer . 
?x1 :type.object.type :computer.operating_system . 
VALUES ?x2 { :m.0620f } 
?x1 :computer.operating_system.developer ?x0 . 
?x1 :computer.operating_system.supported_architectures ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND computer.operating_system_developer (JOIN (R computer.operating_system.developer) (JOIN computer.operating_system.supported_architectures m.0620f)))