what star has a luminosity of 12.1?
Entity
m.09v5ttx
Kepler-4
class literal
astronomy.star 12.1^^http://www.w3.org/2001/XMLSchema#float
astronomy.star type.float
Star 12.1
none none
astronomy.star.luminosity
Luminosity
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.star . 
VALUES ?x1 { "12.1"^^<http://www.w3.org/2001/XMLSchema#float> } 
?x0 :astronomy.star.luminosity ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND astronomy.star (JOIN astronomy.star.luminosity 12.1^^http://www.w3.org/2001/XMLSchema#float))