machine_question: what guitar did the artist which recorded Life in the Fast Lane play
question: What kind of guitar did the recording artist for "Life in the Fast Lane" play?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ?c)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ?c ns:music.featured_artist.recordings ns:m.0fxc8f2 . 
  ?c ns:music.guitarist.guitars_played ?x .
  }
  
webqsp_question: what guitar did joe walsh play