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.

Example Input: Sentence1: Every Saturday night my friends go bowling. Sentence2: Last week they invited me. Sentence3: I was so excited to go bowling with them. Sentence4: When we went bowling I did not do very well. Sentence5: Even though I didn't bowl well I had a lot of fun with my friends.
Example Output: I (myself), Friends

Example Input: Sentence1: Lily was in a bad friendship. Sentence2: She didn't want to be in it anymore. Sentence3: So she decided to not be in it. Sentence4: It was painful. Sentence5: But it was also worth it.
Example Output: Lily

Example Input: Sentence1: It is hunting season in the northern part of the county. Sentence2: After getting a permit, I packed my truck with the needed equipment. Sentence3: I requested time off from my job. Sentence4: When the weekend came, I quickly headed north. Sentence5: I didn't catch anything, but I still had a great time.
Example Output:
I (myself)