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

Input: Consider Input: Are humans a new or old species on the earth?

Output: Are humans a new or old species on the earth?

Input: Consider Input: A bow wake is created when the wave source moves faster than the wave propagation speed.

Output: What is created when the wave source moves faster than the wave propagation speed?

Input: Consider Input: Protist diseases in humans are caused by protozoa.
Output: What type of diseases in humans are caused by protozoa?