Leaving the restaurant, Bob returned to the waiting-room, where he

picked out a seat nearest the place where the train announcer always
stood when he called out the trains that were ready for the passengers
Leaving the restaurant, Bob returned to the waiting-room, where he
picked out a seat nearest the place where the train announcer always
stood when he called out the trains that were ready for the passengers.
But as he sat there, he could not get the words of the girl in the
restaurant out of his mind, and kept repeating to himself: 'Only just
green.'