TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: The love canal tragedy was an infamous example of industrial waste dumping.

SOLUTION: Love canal was an infamous example of what type of pollution?

PROBLEM: The sun and the moon appear to be about the same size in the sky because the moon is smaller in diameter and is closer to earth than the sun.

SOLUTION: Which statement best explains why the Sun and the Moon appear to be about the same size in the sky?

PROBLEM: Cells have four cycles.

SOLUTION:
How many cycles do cells have?