Given the task definition and input, reply with output. 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: It was very hot outside. Sentence2: So Tina went to the beach. Sentence3: She thought it would be good. Sentence4: But then it was not. Sentence5: It was too hard.
Tina