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

Ex Input:
Combustion reaction occurs when a substance reacts quickly with oxygen.

Ex Output:
What occurs when a substance reacts quickly with oxygen?


Ex Input:
Some plants have stolons, or stems, that run along the ground and are commonly called runners.

Ex Output:
Some plants have stolons, or stems, that run along the ground and are commonly called what?


Ex Input:
Deletions remove one or more nucleotides from the dna

Ex Output:

Deletions remove one or more what from the dna?