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

Ex Input:
Superior sagittal sinus is the largest of the sinuses.

Ex Output:
What is the largest of the sinuses?


Ex Input:
Carbon 14 isotope of carbon is typically used to date ancient items.

Ex Output:
What isotope of carbon is typically used to date ancient items?


Ex Input:
Light is produced accelerate charged particles do what, frequently in the form of oscillating.

Ex Output:

Light is produced when charged particles do what, frequently in the form of oscillating?