Whose car is David’s brother going to use on Saturday?

F: David, is this the car your brother is going to drive on Saturday?
M: No, Nancy, this is my father’s car. He uses it for work. My brother is going to borrow my uncle’s van.

M: What’s your favorite subject, Ann?
F: Science.
M: Really? I’m surprised to hear you say that. I thought it was English.
F: Well, English is fun, too, but I find DNA really interesting.