Getting directions to the library.

— Excuse me. I'm afraid I'm a bit lost. I'm looking for the library.
— The library? Let's see. The best way to get there is to go back to this street in front of the store and turn left. Go two intersections, then take a right onto 72nd Street.
— A right at 72nd?
— Yes. The next stoplight will be Williams street. Turn left, and you'll see the library a half block down on the left-hand side.