TASK DEFINITION: In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
PROBLEM: Sentence: Nonvascular plants were the first plants to evolve. Question: What were the first plants to evolve?

SOLUTION: nonvascular plants

PROBLEM: Sentence: An experiment is a controlled scientific test that often takes place in a lab. Question: What is a controlled scientific test that often takes place in a lab?

SOLUTION: an experiment

PROBLEM: Sentence: We use voltage to keep track of electric potential energy. Question: What do we use to keep track of electric potential energy?

SOLUTION:
voltage