which singers are able to sing bass-baritone?
Entity Entity Entity Entity Entity Entity Entity Entity Entity Entity
m.0f1hsb m.01v_njh m.05b17gs m.05p0srw m.01312077 m.013124gp m.01vy4_3 m.0cp8zlh m.01w9twf m.0gtxpgk
Ruggero Raimondi Peter Steele Bobby Valentino Yoochun Exzavier Whitley Exzavier Whitley Andy Gilmour Sylvester Wager Dino Soldo Abdulaziz Abdulrahman
class entity
music.group_member m.01tlvj
music.group_member music.voice
Musician Bass-baritone
none none
music.group_member.vocal_range
Vocal Range
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 :music.group_member . 
VALUES ?x1 { :m.01tlvj } 
?x0 :music.group_member.vocal_range ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND music.group_member (JOIN music.group_member.vocal_range m.01tlvj))