根据语篇内容，判断下列句子正误

Hi. I'm Gina. Those are my three friends. Their names are Jack, Grace and Frank. Jack and Grace are brother and sister. Their family has（有） four people, and their father and mother are teachers. They also have a dog. The dog's name is Bob.

Frank is a good boy. He is in a big family of eight—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.