A: Hi. I'm Rob. What's your name?

B: Hi, I'm Philippa.

A: Are you a doctor, Philippa?

B: Yes, I am.

A: Who's that?

B: That's Tina, my friend. Her name's Tina. Is she a doctor, too?

B: Yes, she is.

A: Who are those people with Tina?

B: They are Dan and Eddie.

A: Are they doctors, too?

B: No, they're not. They are nurses.