TASK DEFINITION: In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
PROBLEM: Question: What are drilled to monitor groundwater pollution? Answer: test wells

SOLUTION: Test wells are drilled to monitor groundwater pollution.

PROBLEM: Question: Why do birds need a light-weight body? Answer: to stay aloft

SOLUTION: Birds need a light-weight body for to stay aloft.

PROBLEM: Question: Ac is better than dc for doing what? Answer: transporting electrcal energy

SOLUTION:
Ac is better than dc for doing transporting electrcal energy.