thomas schönhoff was the developer of which operating system?
Entity
m.06g6lk
Foresight Linux
class entity
computer.operating_system m.02sjps9
computer.operating_system computer.operating_system_developer
Operating System Thomas Schönhoff
none none
computer.operating_system.developer
Developer
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 . 
VALUES ?x1 { :m.02sjps9 } 
?x0 :computer.operating_system.developer ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND computer.operating_system (JOIN computer.operating_system.developer m.02sjps9))