You are given a sentence and your task is to generate another sentence that supports the given input.

[EX Q]: Backflow of blood in the heart is prevented by four valves made of flaps of connective tissue.
[EX A]: Heart valves prevent the backflow of blood from happening in the heart.

[EX Q]: The carotid arteries are two arteries in the neck that supply blood to the brain.
[EX A]: The carotid artery takes blood to the brain.

[EX Q]: Some of these isotopes have half-lives of tens of thousands of years, and therefore require long-term isolation.
[EX A]:
The long-lived isotopes require thousands of years to decay to a safe level in a nuclear reactor.