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: Nora went to the dentist this week. Sentence2: She was nervous they would find cavities because she had a toothache. Sentence3: Her fears were confirmed when they found two. Sentence4: The dentist told her she'd have to schedule follow up visits. Sentence5: She's getting fillings next Wednesday.
[A]: Nora, The dentist

[Q]: Sentence1: Ann had never been involved in politics until this year. Sentence2: When her political party asked her to volunteer, she hesitated. Sentence3: Though shy, she felt the election was too important not to help. Sentence4: Her friends were surprised Ann became an effective door knocker. Sentence5: Given courage by her beliefs, Ann inspired others to get involved.
[A]: Ann, Friends, Political party

[Q]: Sentence1: Brian has dreamed for many Years of going back graduate school. Sentence2: He starts by studying for a standardized test. Sentence3: He takes the test and gets a terrific score. Sentence4: Now Brian is ready to apply to school. Sentence5: He applies and is accepted at his first choice graduate school.
[A]:
Brian