Q: 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: Tom noticed his headlights were grimy looking. Sentence2: He tried cleaning them but it didn't help. Sentence3: He went online and found some specific cleaning products. Sentence4: Tom tried using several kinds. Sentence5: Finally he was able to clean them properly.
A:
Tom