TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Pressure and vibration are examples of physical type of stimuli.

SOLUTION: Pressure and vibration are examples of what type of stimuli?

PROBLEM: Compound does the precise pattern of a crystal depend on.

SOLUTION: What does the precise pattern of a crystal depend on?

PROBLEM: Mercury is the name of the smallest planet in our solar system, which is also nearest to the sun.

SOLUTION:
What is the name of the smallest planet in our solar system, which is also nearest to the sun?