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

Ex Input:
An acorn growing into an adult tree will take the longest time to observe.

Ex Output:
Which of these will take the LONGEST time to observe?


Ex Input:
Water plus other substances makes a(n) solution.

Ex Output:
Water plus other substances makes what?


Ex Input:
C6 h12 o6 is the chemical formula for a glucose molecule.

Ex Output:
What is the chemical formula for a glucose molecule?