instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The human eye detect can detect three colors of light.
answer:
How many colors of light can the human eye detect?

question:
The long, threadlike extensions of the nerve cell help transmit nerve impulses.
answer:
Which part of the nerve cell helps transmit nerve impulses?

question:
N and p pair of elements has the most similar properties.
answer:
Which pair of elements has the most similar properties?