how many albums has ray watts been the main contributor?
Value
1
class entity
music.album m.0h_cf30
music.album music.featured_artist
Musical Album Ray Watts
count none
music.album.featured_artists
Featured artists
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 (COUNT(?x0) AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :music.album . 
VALUES ?x1 { :m.0h_cf30 } 
?x0 :music.album.featured_artists ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(COUNT (AND music.album (JOIN music.album.featured_artists m.0h_cf30)))