TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Living organisms are made up of biochemical type of carbon-based compounds.

SOLUTION: Living organisms are made up of what type of carbon-based compounds?

PROBLEM: In the tropics tradewinds are the prevailing winds called.

SOLUTION: In the tropics what are the prevailing winds called?

PROBLEM: Amphibians (or tetrapods) were the first with four limbs.

SOLUTION:
Which vertebrates were the first with four limbs?