TASK DEFINITION: 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.
PROBLEM: Sentence1: I was feeling a little hungry. Sentence2: I decided to make oysters. Sentence3: But first, I had to find some. Sentence4: I went to the beach and began looking. Sentence5: By the end of the day, I had caught twenty oysters!

SOLUTION: I (myself)

PROBLEM: Sentence1: Mark and Jim went out fishing so they could have something for dinner. Sentence2: The two worked hard but it was hot and there were no fish. Sentence3: Jim suggested trying a new spot in the shade. Sentence4: The new spot worked and they brought in half a dozen fish. Sentence5: That night they had a delicious meal they were proud of.

SOLUTION: Jim, Mark

PROBLEM: Sentence1: A shy young teen picked up a guitar. Sentence2: He quickly became proficient after diligent practicing. Sentence3: In high school, girls liked to hear him play. Sentence4: He gained a lot of confidence. Sentence5: The guitar had transformed him into a new person.

SOLUTION:
Teen, Girls