Later, at the Bridge of Death, the Bridgekeeper asks Arthur his third question. "What is the airspeed velocity of an unladen swallow?" When Arthur asks the old man whether he means an African or European swallow, the Bridgekeeper is unable to answer, and is thus launched into The Gorge of Eternal Peril. When Sir Bedevere asks how Arthur knows so much about swallows, he replies, "You have to know these things when you're king."