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: Erin loved roller coasters. Sentence2: She went to her favorite amusement park for her birthday. Sentence3: Erin rode 12 different roller coasters in one day! Sentence4: She enjoyed the thrill she got everytime there was a drop. Sentence5: Erin returned many times to ride the roller coasters.
Output:
Erin