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: Deep currents are caused by differences in density at the top and bottom of the ocean. Question: What is caused by differences in density at the top and bottom of the ocean?

SOLUTION: deep currents

PROBLEM: Sentence: The innate immune system serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body. Question: What serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body?

SOLUTION: innate immune system

PROBLEM: Sentence: Are cats more active at night than during the day? of the following questions is testable in a scientific investigation. Question: Which of the following questions is testable in a scientific investigation?

SOLUTION:
Are cats more active at night than during the day?.