A: What do we need to buy?
B: Let me look at our list.
A: I know that we need milk.
A: Of course. What else?
B: We need cheese, bread, and ham.
A: What kind of cheese?
A: Of course, the cheese with holes in it.
B: I never used to buy Swiss cheese.
A: Why not?
B: I didn't want to pay for the holes.