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 Q]: Sentence1: Barry took a science class. Sentence2: He didn't expect an essay. Sentence3: He took a test with one. Sentence4: He did his very best. Sentence5: Barry didn't do so well.
[EX A]: Barry, Science class

[EX Q]: Sentence1: Iris put on blue contacts. Sentence2: She looked at herself in the mirror. Sentence3: She thought she looked weird. Sentence4: She replaced the contacts. Sentence5: She thought she looked better in brown.
[EX A]: Iris

[EX Q]: Sentence1: Tom got a new cat. Sentence2: Within a week it was lost. Sentence3: Tom looked around a bit for it but didn't find it. Sentence4: Tom decided to get a dog instead. Sentence5: Eventually the cat returned and Tom gave it away.
[EX A]:
Cat, Tom