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 was a mean older sister, and one day I had a brilliant meal idea. Sentence2: I called my sister Names, as in, "Hey, Names, get out of my seat." Sentence3: My sister started crying and told my mom I was calling her Names. Sentence4: My mom said "I can't punish her if you don't tell me what names!" Sentence5: My sister was in great distress and I did not get in trouble.
A:
I (myself), Sister, Mom