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.

Ex Input:
Sentence1: Today we had breakfast at 10:30. Sentence2: My wife went to DD to buy coffee and croissants. Sentence3: We had oatmeal and blueberries as well. Sentence4: We have a coffeemaker but prefer DD coffee. Sentence5: It was a nice breakfast.

Ex Output:
I (myself), Wife

Ex 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.

Ex Output:
I (myself), Friends

Ex Input:
Sentence1: My friend, Zach and I were playing video games yesterday. Sentence2: All of a sudden, the doorbell rang. Sentence3: Zach opened the door to find a pizza on the ground with a card. Sentence4: On the card was a message thanking my friend. Sentence5: His neighbor left it for him because Zach had helped him move earlier.

Ex Output:
I (myself), Neighbor, Zach