in what type of cloud would you find the varieties of altocumulus mackerel sky?
Entity
m.016839
Altocumulus
class entity
meteorology.cloud m.079mcl
meteorology.cloud meteorology.cloud
Cloud Altocumulus mackerel sky
none none
meteorology.cloud.varieties
Varieties
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 :meteorology.cloud . 
VALUES ?x1 { :m.079mcl } 
?x0 :meteorology.cloud.varieties ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND meteorology.cloud (JOIN meteorology.cloud.varieties m.079mcl))