Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Ex Input:
Collision theory states that chemical reactions occur when atoms, ions, or molecules collide.

Ex Output:
What states that chemical reactions occur when atoms, ions, or molecules collide?


Ex Input:
Stringed instruments can help show the relationship between tension and frequencies in strings.

Ex Output:
Stringed instruments can help show the relationship between tension and what in strings?


Ex Input:
In prokaryotes, a(n) genome is composed of a single, double-stranded dna molecule in the form of a loop or circle.

Ex Output:
In prokaryotes, what is composed of a single, double-stranded dna molecule in the form of a loop or circle?