which nebula has apparent magnitude at most 15.0?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.032qry m.0180sq m.0cqsrx m.0l6tq m.03tfyz m.0blrm1 m.03rb59 m.0f8vx1 m.03rv_9 m.01tbtm m.01db0x m.05br1d m.0mdsr m.03s0r1 m.01jn15 m.0wzt6b8 m.01v8lq m.03vvbp m.01xj2c m.01yr9f m.01l710 m.0f1vnv m.029ly4
Horsehead Nebula Orion Nebula Flame Nebula Crab Nebula Omega Nebula Veil Nebula Engraved Hourglass Nebula Ring Nebula Carina Nebula Tarantula Nebula Helix Nebula California Nebula Ring Nebula Lagoon Nebula Trifid Nebula NGC 6153 Eagle Nebula Owl Nebula Dumbbell Nebula North America Nebula Cat's Eye Nebula Bubble Nebula Stingray Nebula
class literal
astronomy.nebula 15.0^^http://www.w3.org/2001/XMLSchema#float
astronomy.nebula type.float
Nebula 15.0
none <=
astronomy.celestial_object.magnitude
Apparent Magnitude
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 :astronomy.nebula . 
FILTER (?x1 <= "15.0"^^<http://www.w3.org/2001/XMLSchema#float>)
?x0 :astronomy.celestial_object.magnitude ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND astronomy.nebula (le astronomy.celestial_object.magnitude 15.0^^http://www.w3.org/2001/XMLSchema#float))