阅读短文，回答问题

Hi, I'm Gina. Those are my friends. Their names are Jack, Grace and Frank. Jack and Grace are brother and sister. There are four people in their family, and their parents are teachers. They have a cat, too. The cat's name is Bob. Frank is a good boy. He is in a big family一his grandparents, parents, aunt, uncle, cousin and him. His aunt's name is Linda. His uncle's name is Tom. And the name of his cousin is Alan.