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: All the girls were ready to start. Sentence2: They had spent a while making the hopscotch markings. Sentence3: They had used sidewalk chalk and ready to play. Sentence4: The girls began jumping to each numbered box. Sentence5: It was great fun playing hopscotch for them.

SOLUTION: Girls

PROBLEM: Sentence1: The Greens live in Atlanta. Sentence2: Last week, they traveled to Canada. Sentence3: There was a lot of snow and ice. Sentence4: Wind chills were well below zero. Sentence5: The Greens are happy to be back in warm Atlanta!

SOLUTION: Greens

PROBLEM: Sentence1: Mary baked her first pie. Sentence2: It didn't turn out as well as she thought it would. Sentence3: The crust was burned and the fruit inside wasn't that great. Sentence4: However, she remembered that practice makes perfect and tried again. Sentence5: Each pie after came out better, and she was happy she didn't give up.

SOLUTION:
Mary