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: Carl was passionate about computers. Sentence2: He took many classes about computer programming. Sentence3: He decided to build a computer himself. Sentence4: He spent many hours researching and planning the computer. Sentence5: He successfully built the computer and saved a lot of money doing so.
Carl

Sentence1: Janet was dating her boyfriend for a very long time. Sentence2: They were doing really well but had their doubts. Sentence3: As time went on Janet decided that they should break up. Sentence4: She asked me for advice on how to do it, but I didn't have any! Sentence5: A few weeks later she broke up with her boyfriend.
I (myself), Janet's boyfriend, Janet

Sentence1: Miranda was shopping for computers online. Sentence2: Her old laptop screen had broken. Sentence3: Then she noticed a replacement screen for sale. Sentence4: She hadn't known it was possible to fix but she bought it. Sentence5: She was thrilled to realize that she could fix her computer.
Miranda