Definition: 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.
Input: Sentence1: Allie was excited to have a sleepover party with all of her friends. Sentence2: She could not wait for her friends to come and party with her. Sentence3: When her friends got there they made their own pizzas. Sentence4: After dinner the girls watched a movie and ate popcorn. Sentence5: By the time it was ready for bed, the girls were exhausted.
Output:
Friends, Allie