TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: By using fructose can you prevent your ice cream from getting a sandy texture.

SOLUTION: How can you prevent your ice cream from getting a sandy texture?

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

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

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

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