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

Input: Consider Input: One gram of sugar or starch provides 4 calories of energy.

Output: How many calories of energy does one gram of sugar or starch provide?


Input: Consider Input: In paragraph 2, they had been untouched for centuries does the phrase à¥ˆ€œfrozen in timeà¥ˆ€ suggest about the figures.

Output: In paragraph 2, what does the phrase à¥ˆ€œfrozen in timeà¥ˆ€ suggest about the figures?


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?