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: Carl needed to lose weight. Sentence2: He found it very hard since he loved candy. Sentence3: He decided he would stop having candy in the house. Sentence4: He found it much easier to lose weight this way. Sentence5: Soon, Carl was down ten pounds and didn't miss eating candy at all.

SOLUTION: Carl

PROBLEM: Sentence1: Galen's father loved sailboats. Sentence2: Galen never had time to learn to sail. Sentence3: One day, he decided that he wanted to try it out. Sentence4: Galen asked his father to teach him to sail. Sentence5: He now has a new favorite hobby.

SOLUTION: Galen, Father

PROBLEM: Sentence1: Belle had been blind since birth, but things were changing for her. Sentence2: Doctors were giving her a new surgery to restore her sight. Sentence3: The long operation was risky, but it worked in the end! Sentence4: Belle cried as she stepped into the sun for the first time. Sentence5: The next day she bought her first pair of sunglasses!

SOLUTION:
Belle, Doctors