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: Bob studied hard in high school to get good grades. Sentence2: Bob applied to a good college. Sentence3: Bob got accepted to the college. Sentence4: In college Bob studied hard to meet the requirements. Sentence5: Bob met the requirements and graduated from college with a degree.
Bob, College, School