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: Which likely increased atmospheric CO2 recently? Answer: motorcycles.

SOLUTION: carbon dioxide concentrations in the air have increased over the last decade dramatically

PROBLEM: Question: Rain helps? Answer: communities thrive.

SOLUTION: rain is a source of water

PROBLEM: Question: Why would philanthropists donate special straws to help poor countries? Answer: they treat water.

SOLUTION:
treating water is used to remove harmful substances before drinking