which asteroids are categorized as f-type asteroid?
Entity Entity
m.04g2rbz m.0588rb
2081 Sázava 335 Roberta
class entity
astronomy.asteroid m.02m9zj
astronomy.asteroid astronomy.asteroid_spectral_type
Asteroid F-type asteroid
none none
astronomy.asteroid.spectral_type
Spectral Type
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.asteroid . 
VALUES ?x1 { :m.02m9zj } 
?x0 :astronomy.asteroid.spectral_type ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND astronomy.asteroid (JOIN astronomy.asteroid.spectral_type m.02m9zj))