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: Consider Input: Sentence1: Don was four years old. Sentence2: He wanted to ride in a baby stroller. Sentence3: He could no longer fit in the stroller. Sentence4: This made him angry. Sentence5: He cried because he does not want to keep growing.

Output: Don

Input: Consider Input: Sentence1: Gina went for a walk near her home. Sentence2: At the end of the walkway was an orange construction sign. Sentence3: Gina walked over to see what the sign said. Sentence4: The sign stated a major street would be closing for repairs. Sentence5: It would be inconvenient, but Gina hoped it would at least be quick.

Output: Gina

Input: Consider Input: Sentence1: In second grade someone stole my cabbage patch kid doll. Sentence2: We went on a wild goose chase looking all over for it. Sentence3: Someone finally told us that a girl had given her one on the bus. Sentence4: However, when she got off the bus she dropped it in the grass. Sentence5: When we drove by the area, we got my doll back.
Output: I (myself), A girl, Someone