instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The vascular structure functions as a framework that reinforces the shape of the leaf.
answer:
What functions as a framework that reinforces the shape of the leaf?


question:
The action of flushing the toilet, performed multiple times daily, is the single biggest use of water in the home.
answer:
What action, performed multiple times daily, is the single biggest use of water in the home?


question:
Chemistry is defined as the study of matter.
answer:

What branch of science is defined as the study of matter?