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

[EX Q]: Composed mainly of hormone-producing chromaffin cells, the adrenal medulla is the principal site of the conversion of the amino acid tyrosine into the catecholamines epinephrine, norepinephrine, and dopamine.
[EX A]: Catecholamines are a class of amine hormones that when synthesised form the amino acid tyrosine.

[EX Q]: According to the kinetic theory of gases, the temperature of a gas is just a measure of the average kinetic energy of the particles in that gas.
[EX A]: In physics, temperature is defined as the average kinetic energy of the particles in an object?

[EX Q]: The pupil is the opening through which light enters the eye.
[EX A]:
The pupil of the eye allows light to enter.