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.
Q: Sentence1: I saw an ex-girlfriend at a party. Sentence2: She looked good. Sentence3: She avoided me the whole night. Sentence4: That hurt my feelings. Sentence5: But leaving the party, I saw her in the front yard, vomiting.
A:
I (myself), Ex-girlfriend