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

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

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


Ex Input:
Destructive interference in waves occurs two troughs what things overlap.

Ex Output:
Destructive interference in waves occurs when what things overlap?


Ex Input:
The nail bed is a specialized structure of the epidermis that is found at the tips of our fingers and toes.

Ex Output:

The nail bed is a specialized structure of the epidermis that is found at the tips of our what?