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: Jimmy woke up early. Sentence2: As he ate breakfast, he read the note from him mom to mow the yard. Sentence3: It was already getting hot so he went into the garage for the mower. Sentence4: After gassing it up, he mowed the backyard quickly. Sentence5: He got to have a treat for finishing his chore.

SOLUTION: Jimmy, Mom

PROBLEM: Sentence1: My girlfriend and I decided to cook together Tuesday. Sentence2: We chose to make fajitas. Sentence3: It was fun and easy. Sentence4: We only got in each other's way a little. Sentence5: The food was delicious and we plan to do it again soon.

SOLUTION: Girlfriend, I (myself)

PROBLEM: Sentence1: Sam was trying to pet the bear. Sentence2: All of the sudden, the bear got excited. Sentence3: It ran towards Sam and attacked her. Sentence4: The zookeepers managed to calm the bear down. Sentence5: Sam had to go to the clinic to clean her wounds.

SOLUTION:
The bear, Sam, Zookeepers