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: Waiting for the next train to pull up, Harry was nervous. Sentence2: He was only a few hours away from his big interview. Sentence3: Spending the last three months sending out resumes, this was it. Sentence4: Boarding the train, he noticed something strange about the inside. Sentence5: He had hopped on the wrong color train, and would be late.

Output: Harry

Input: Consider Input: Sentence1: The family arrives at the beach. Sentence2: Everyone puts on sunscreen. Sentence3: The son plays in the clear water. Sentence4: The daughter builds sand castles. Sentence5: The parents relax for the rest of the day.

Output: The parents, The daughter, The family, The son

Input: Consider Input: Sentence1: The family arrived at the beach on Tuesday. Sentence2: They spent all of Wednesday in the water ! Sentence3: The sand and sun were both hot. Sentence4: They relaxed and spent time together. Sentence5: It was a great break from reality!
Output: The family