what is the name of the spaceports that are launched from sts-6?
Entity
m.062vvj
Kennedy Space Center Launch Complex 39
class entity
spaceflight.rocket_launch_site m.018yvx
spaceflight.rocket_launch_site spaceflight.space_mission
Spaceport STS-6
none none
spaceflight.rocket_launch_site.missions_launched_here
Missions launched here
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 :spaceflight.rocket_launch_site . 
VALUES ?x1 { :m.018yvx } 
?x0 :spaceflight.rocket_launch_site.missions_launched_here ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND spaceflight.rocket_launch_site (JOIN spaceflight.rocket_launch_site.missions_launched_here m.018yvx))