Part 1. Definition
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
Part 2. Example
Earth rotates on its axis once times in one day.
Answer: How many times does Earth rotate on its axis in one day?
Explanation: The given output correctly poses a question based on the scientific fact given.
Part 3. Exercise
Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of cellulose.
Answer:
Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of this?