TASK DEFINITION: In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.
PROBLEM: Question: An example of biofuel could be? Answer: leaves.

SOLUTION: biofuel is used to produce electricity by burning

PROBLEM: Question: A glacier is made from? Answer: the same stuff as steam.

SOLUTION: a glacier is made of ice

PROBLEM: Question: Buying permanent things instead of disposable things is? Answer: conservation.

SOLUTION:
An example of conservation is avoiding waste