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 produced in both the male and female reproductive systems in humans? Answer: sex cells

SOLUTION: Sex cells are produced in both the male and female reproductive systems in humans.

PROBLEM: Question: Which is the best way to maintain a strong, fit body? Answer: a healthy diet

SOLUTION: A healthy diet is the best way to maintain a strong, fit body.

PROBLEM: Question: Loss of energy is the reason that what typically has few levels? Answer: food chain

SOLUTION:
Loss of energy is the reason that food chain typically has few levels.