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: Sandy went to her granddaughter Meredith's house today. Sentence2: Whenever she goes there, she watches TV. Sentence3: Meredith was upset because her grandmother only watched TV. Sentence4: She told Sandy that she was not welcome in her house anymore. Sentence5: Sandy cried all night because she felt betrayed by her granddaughter.
Sandy, Sandy granddaughter meredith