A: I'm going to my granfather's house. It's his birthday today!
B: Oh, really? How old is he?
A: He's seventy-one!
A: I'm going to my uncle's house. It's his birthday today!
B: Oh, really? How old is he?
A: He's fifty-five!
A: I'm going to my aunt's house. It's her birthday today!
B: Oh, really? How old is she?
A: She's fourty-three!
A: I'm going to my cousin's house. It's his birthday today!
B: Oh, really? How old is he?
A: He's twenty-nine!