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.

[Q]: Sentence1: Debra was looking for her cat. Sentence2: Sam said she'd help her. Sentence3: The cat was on a tree. Sentence4: Sam climbed up the tree but fell. Sentence5: The cat jumped down the tree.
[A]: Her cat, Sam, Debra

[Q]: Sentence1: Jeff was constantly stressed out. Sentence2: But one day, someone approached him and talked to him. Sentence3: Immediately, Jeff felt more relaxed. Sentence4: And he realized that having more friends would help his stress. Sentence5: But Jeff struggled to hold conversations with others.
[A]: Someone, Friends, Others, Jeff

[Q]: Sentence1: Will and his roommate were having an argument about pizza. Sentence2: They disagreed on which topping was better - ham or bacon. Sentence3: Will ordered a pizza, half with ham and half with bacon. Sentence4: The two guys did a taste test using the pizza. Sentence5: They both decided that bacon is the better pizza topping.
[A]:
Will, Roommate