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.

Input: Consider Input: 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.

Output: Girls

Input: Consider Input: Sentence1: Jan wanted a new purse. Sentence2: She knew should could not afford the one she wanted. Sentence3: She decided to start saving until she could. Sentence4: Jan finally had enough money. Sentence5: When she went to buy the purse, it was gone.

Output: Jan

Input: Consider Input: Sentence1: Cory was a tree trimmer. Sentence2: He was hired to cut the extra branches off his neighbor's tree. Sentence3: Unfortunately one of the branches fell and knocked him off his ladder. Sentence4: Cory was in pain, but not badly hurt. Sentence5: He was much more careful about where he was cutting after that.
Output: Cory, Neighbor