You will be given a definition of a task first, then some input of the task.
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: I had a Skype meeting with my professor today. Sentence2: I felt extremely anxious beforehand because I don't like to Skype. Sentence3: Luckily, it was only a 3 minute call. Sentence4: It was still weird that we were video chatting each other. Sentence5: It was awkward hanging up too.
Output:
I (myself), Professor