Complex sentence: A documentary titled "King of the Mountain" was made about the Jenks-Union rivalry, and it has been covered by ESPN, "Sports Illustrated", and NFL Films, which covered the 2007 regular season game.
Split into simpler sentences: A documentary titled "King of the Mountain" was made about the Jenks-Union rivalry. The Union Jenks game has been talked about on ESPN, Sports Illustrated, and NFL films covered the 2007 regular season game.