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: Bobby was downloading music to his computer. Sentence2: He was downloading it from a shady site. Sentence3: Bobby began to have trouble with his computer. Sentence4: He had downloaded a virus. Sentence5: Bobby had to bring his computer to an expert.
An expert, Bobby

Sentence1: On Thanksgiving morning the Smith girls were getting ready to cook. Sentence2: Everything was prepped and ready to cook, but something was missing. Sentence3: There was no cranberry sauce! Sentence4: The girls tried using other fruits to substitute, but none would do. Sentence5: Then Grandma Smith arrived with her world famous cranberry sauce!
Grandma, Grandma smith, Smith girls

Sentence1: George was trying to overcome traffic on the road. Sentence2: Without looking at his blind spot, he changed into the left lane. Sentence3: He ended up running into a large van. Sentence4: The left wheel popped off and his car spun off of the road. Sentence5: The police officers had to come to investigate the scene.
Police, Police officers, George