You will be given a definition of a task first, then some input of the task.
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: Once, my family and I went camping in the Poconos. Sentence2: We had heard there were black bears in the area and hoped to see one. Sentence3: Suddenly, a mama and two cubs ran out of the woods by our site! Sentence4: We stayed in the RV and watched them from the window. Sentence5: We were definitely lucky to see them and it made the trip more fun!
Output:
I (myself), My family