Complex sentence: At the 2006 Comic-Con Convention in San Diego, California, Broken Lizard revealed that a prequel for the film was in the works which would take place in the 1970s and follow the fathers of the main characters in the original film.
Split into simpler sentences: At the 2006 Comic-Con Convention in San Diego, California, Broken Lizard revealed that a prequel for the film is in the works. It will take place in the 1970s and will follow the fathers of the main characters in the original film.