machine_question: who plays stewie griffin on the tv program that has the theme song Family Guy Theme Song
question: In the TV show that is known for the family guy theme song, who plays the character Stewis Griffin?
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:tv.tv_program.theme_song ns:m.0n9cghm . 
  ?c ns:tv.tv_program.regular_cast ?y .
  ?y ns:tv.regular_tv_appearance.actor ?x .
  ?y ns:tv.regular_tv_appearance.character ns:m.02m29p .
  }
  
webqsp_question: who plays stewie griffin on family guy