machine_question: who plays the voice of meg in the tv program that has the theme song Family Guy Theme Song
question: Who voices the character Meg in the tv show that has the theme song, "Family Guy Theme Song"?
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.035szd .
  ?y ns:tv.regular_tv_appearance.special_performance_type ns:m.02nsjvf .
  FILTER(NOT EXISTS {?y ns:tv.regular_tv_appearance.from ?sk0} || 
  EXISTS {?y ns:tv.regular_tv_appearance.from ?sk1 . 
  FILTER(xsd:datetime(?sk1) <= "2015-08-10"^^xsd:dateTime) })
  FILTER(NOT EXISTS {?y ns:tv.regular_tv_appearance.to ?sk2} || 
  EXISTS {?y ns:tv.regular_tv_appearance.to ?sk3 . 
  FILTER(xsd:datetime(?sk3) >= "2015-08-10"^^xsd:dateTime) })
  }
  
webqsp_question: who plays the voice of meg in family guy