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.

Sentence1: Tim was brushing his teeth one morning. Sentence2: Tim noticed he was almost out of toothpaste. Sentence3: Tim decided to go to the store for more. Sentence4: Tim saw natural toothpaste. Sentence5: Tim tried natural toothpaste for the first time.
Tim

Sentence1: Nell was supposed to sell candy for a school fundraiser. Sentence2: She procrastinated because she hated going door to door. Sentence3: The day before the fundraiser ended, Nell broke her piggy bank. Sentence4: She counted enough money to buy a few boxes of candy. Sentence5: Sick to her stomach from candy, Nell turned in the money.
Nell

Sentence1: I was driving and I noticed how messy the road was. Sentence2: There was litter everywhere. Sentence3: I could not drive 10 feet without seeing an empty can. Sentence4: I called up all of my friends from the neighborhood. Sentence5: We got together to clean up all of the litter in the street.
I (myself), Friends