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.
Example: Sentence1: My dog was bored. Sentence2: I was working all day so I couldn't spend time with him. Sentence3: When I finished work I decided to play with my dog. Sentence4: He was so happy to finally have some fun! Sentence5: Alas, he fell sick and died.
Example solution: I (myself), Dog
Example explanation: There is only two characters in given story, i.e., I (myself) and dog.

Problem: Sentence1: Lucy and her grandma pulled into the library parking lot. Sentence2: Lucy jumped out of the car and ran inside. Sentence3: All their computers were in use. Sentence4: Lucy took a number and waited her turn. Sentence5: After 20 minutes she was finally online again.

Solution: Lucy, Her grandma