根据上面的对话内容，完成Tom的家谱图。

Peter: Look, it's Tom's family photo.

Jim: Is this his sister?

Peter: I don't know. Tom, is this your sister?

Tom: Yes, it's my elder sister. Her name is Linda.

Jim: How about this woman? Is she your mother?

Tom: No. She is my aunt. Her name is Carol. Those are my parents. My father Frank is a doctor

        and my mother Sarah is a professor (教授).

Peter: Who's this baby then?

Tom: It's my cousin. She is Allen and Carol's daughter. Her name is Sally. She is only 3 years old.

Jim: She is so cute. These two people are your grandparents, aren't they?

Tom: Yes, they are. They are both teachers. Their students call them Mr and Mrs Green.