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 is the smallest unit of time commonly based on? Answer: second

SOLUTION: Second is the smallest unit of time commonly based on.

PROBLEM: Question: Acne and different types of cancer can affect what large organ? Answer: skin

SOLUTION: Acne and different types of cancer can affect skin large organ.

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.