TASK DEFINITION: In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.
PROBLEM: Fact: stalactites are formed by deposition. Question: The ceiling of the cave grew closer to the ground due to:?

SOLUTION: deposition

PROBLEM: Fact: the moon 's surface contains many craters. Question: the moon 's surface contains many?

SOLUTION: ground bumps

PROBLEM: Fact: hydropower requires damming a river. Question: Diverting overflow from a reservoir through pipes generates?

SOLUTION:
hydropower