instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The pupil is the name of the black opening in the eye that lets light enter.
answer:
What is the name of the black opening in the eye that lets light enter?


question:
Monatomic ions form when a single atom gains or loses electrons.
answer:
What form when a single atom gains or loses electrons?


question:
Explosive waste type of waste is likely to explode.
answer:

What type of waste is likely to explode?