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: John did not know how to roller skate. Sentence2: His friend said that he would teach him. Sentence3: They spent all day practicing skating. Sentence4: John kept trying and got very good. Sentence5: Now he roller skates all over the neighborhood.
John, Friend

Sentence1: Phil wanted to have a fun evening out in town. Sentence2: He invited his friend Rich to join him for some karaoke. Sentence3: They went to a karaoke bar and had a few drinks. Sentence4: Phil got up on stage and started singing. Sentence5: His singing was atrocious, but everyone joined in anyway.
Phil, Everyone, Rich

Sentence1: Jenny painted her middle toenail black. Sentence2: Her friend asked her why. Sentence3: Jenny offered to paint her nail so she could see. Sentence4: Her friend agreed. Sentence5: Jenny painted her friends middle toenail black.
Jenny, Friend