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.

[Q]: Sentence1: Alex had a young son. Sentence2: The boy was three years old. Sentence3: He still wasn't speaking. Sentence4: Alex told the doctor about his speech issue. Sentence5: Alex's son started to see a speech therapist.
[A]: Speech therapist, Alex, Young son, Doctor

[Q]: Sentence1: Shane noticed that his beard was becoming long and unprofessional. Sentence2: He decided he should shave it. Sentence3: It was difficult to shave because it had grown so long. Sentence4: When he had finally shaved, Shane felt much better. Sentence5: Shane was glad to look better now that he had shaved.
[A]: Shane

[Q]: Sentence1: My store just had its annual inventory. Sentence2: An outside firm is hired to come in and count everything. Sentence3: Our results were much worse than last year. Sentence4: My department is the only one that improved over last year's results. Sentence5: Several managers have been demoted and we lost our next bonus.
[A]:
I (myself), My department, Managers, My store, Outside firm