instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Ionic compounds contain cations and anions rather than discrete neutral molecules.
answer:
Ionic compounds contain cations and anions rather than what?


question:
Socket secures teeth in the mouth.
answer:
What secures teeth in the mouth?


question:
The epidermis of a leaf contains openings known as stomata, through which the exchange of gases takes place.
answer:
Which part of a leaf contains openings known as stomata, through which the exchange of gases takes place?