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.
Q: Sentence1: Two fishermen were crab fishing in the deep sea. Sentence2: It became cloudy and they could not see land anymore. Sentence3: The fishermen stressed and called the police. Sentence4: A helicopter arrived shortly for the fishermen. Sentence5: The fishermen were rescued.
A:
Two fishermen