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: Marty was paying a lot of money for car insurance. Sentence2: He decided that he needed to switch to a new company. Sentence3: He looked up quotes online from different insurance companies. Sentence4: He eventually decided on switching to Geico. Sentence5: Marty saved fifteen percent on his insurance by making the switch.
Marty, Company, Companies