Detailed Instructions: 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: Bill was at home with his family one weekend day. Sentence2: Out of nowhere, it became very stormy and windy. Sentence3: Bill checked the news and saw a tornado warning on all channels. Sentence4: He took his family into their basement with supplies. Sentence5: After waiting the whole night, the tornado passed and they were safe.
A:
Bill, His family