Complex sentence: "Big Gun" is a song by AC/DC. It was released as a single in 1993 and is also included on the soundtrack to the movie starring Arnold Schwarzenegger, "Last Action Hero".
Split into simpler sentences: Big Gun is a song by AC/DC. This song is found on their single with the same name. It is also found on the soundtrack to the movie starring Arnold Schwarzenegger, "Last Action Hero".