instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Superior sagittal sinus is the largest of the sinuses.
answer:
What is the largest of the sinuses?


question:
Pressure and vibration are examples of physical type of stimuli.
answer:
Pressure and vibration are examples of what type of stimuli?


question:
Ionic compound atoms of various elements gain or lose electrons to produce ions.
answer:

Ionic compound atoms of various elements gain or lose electrons to?