instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Poles parts of the planet does solar energy have difficulty reaching.
answer:
What parts of the planet does solar energy have difficulty reaching?

question:
Pangaea began breaking apart 250 million years ago.
answer:
How many millions of years ago did pangaea begin breaking apart?

question:
Solid property are alkali metals at room temperature.
answer:
What property are alkali metals at room temperature?