How [do] four [become tamei]? Utensils that touch a corpse, and a person [who touched] the utensils, and [then other] utensils which touched the person — [all] become tamei for seven days. The fourth [one to be touched], whether it is a person or a utensil, becomes tamei [until] evening. R’ Akiva said: I have [a case where] five [become tamei] — a pole inserted into a tent. The tent, the pole, a person touching the pole, and utensils [touching] the person — [all] become tamei for seven days. The fifth one [to be touched], whether it is a person or a utensil, becomes tamei until evening. They said to him: The tent is not counted.