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

Example Input: Plankton is the most common life form in the ocean.
Example Output: What is the most common life form in the ocean?

Example Input: Three many families are known quarks divided into.
Example Output: How many families are known quarks divided into?

Example Input: Catabolic reactions involve breaking bonds.
Example Output:
Catabolic reactions involve breaking what?