what is the musical instrument of alejandro otaola?
Entity Entity
m.0342h m.05148p4
Guitar Keyboard
class entity
music.instrument m.03j1b56
music.instrument music.group_member
Musical instrument Alejandro Otaola
none none
music.instrument.instrumentalists
Instrumentalists
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.instrument . 
VALUES ?x1 { :m.03j1b56 } 
?x0 :music.instrument.instrumentalists ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND music.instrument (JOIN music.instrument.instrumentalists m.03j1b56))