Given the task definition and input, reply with output. In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Sentence1: The Denver Broncos played the Carolina Panthers last night. Sentence2: This was a rematch of Super Bowl 50. Sentence3: The Panthers were favored to win the game last night. Sentence4: Carolina led in the 3rd quarter but Denver came back. Sentence5: The Broncos won as Carolina missed a field goal with 4 seconds left.
Denver broncos, Carolina panthers