the project mercury was part of what mission?
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
m.03693x m.01f7fp m.01f7dw m.01f7g2 m.01f7cz m.0365_m m.039sqr m.01f7f8 m.036w7s m.036048 m.0hnvf8c m.01f7cj m.0380by m.037y53 m.03867c m.021x2c m.0380yp m.039wwc m.0365hv m.036623 m.039xtt m.039xpt m.036w6p m.039wv8 m.0368x4 m.02_x9p m.039g4j
Mercury-Redstone 1A Mercury-Atlas 8 Mercury-Atlas 6 Mercury-Atlas 9 Mercury-Redstone 4 Mercury-Atlas 3 Little Joe 1B Mercury-Atlas 7 Mercury-Redstone BD Mercury-Atlas 10 Mercury-Scout 1 Mission Mercury-Redstone 3 Little Joe 1 Mercury-Atlas 4 Mercury-Atlas 2 Mercury-Atlas 5 Little Joe 1A Little Joe 5 Big Joe 1 Mercury-Atlas 1 Little Joe 5A Little Joe 5B Mercury-Redstone 2 Little Joe 6 Mercury-Redstone 1 Little Joe 2 Beach Abort
class entity
spaceflight.space_mission m.04_50
spaceflight.space_mission spaceflight.space_program
Space Mission Project Mercury
none none
spaceflight.space_mission.space_program
Space program
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.space_mission . 
VALUES ?x1 { :m.04_50 } 
?x0 :spaceflight.space_mission.space_program ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND spaceflight.space_mission (JOIN spaceflight.space_mission.space_program m.04_50))