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: Francis was a large character in the family. Sentence2: He would always be the first to make jokes at a gathering. Sentence3: At one BBQ, Francis made an inappropriate joke in front of everyone. Sentence4: His grandparents disapproved highly. Sentence5: Francis never thought it would be him offending his grandparents.
A:
Grandparents, Francis, Family