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

[EX Q]: A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
[EX A]: All chemical reactions involve both reactants and products.

[EX Q]: Alternatively, mycoplasma surface components ('superantigens') may directly stimulate autoimmune responses,(38) or their molecular mimicry of host antigens may explain, in part, their ability to stimulate autoimmunity.
[EX A]: Autoimmunity can develop with time, and its causes may be rooted in this molecular mimicry.

[EX Q]: A population is all the members of one species that live in the same area.
[EX A]:
All members of a species living together form a(n) population.