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.

Example Input: Question: Which is the best explanation for how air masses move across the United States? Answer: The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream.
Example Output: The best explanation for how air masses move across the united states is that the prevailing westerlies move air masses from west to east across the united states but may be deflected by the jet stream.

Example Input: Question: What are produced in both the male and female reproductive systems in humans? Answer: sex cells
Example Output: Sex cells are produced in both the male and female reproductive systems in humans.

Example Input: Question: All species of crocodilians have similar body structures, including an elongated snout, powerful jaws, muscular tail, large protective scales, streamlined body, and eyes and nostrils that are positioned on what? Answer: top of head
Example Output:
All species of crocodilians have similar body structures, including an elongated snout, powerful jaws, muscular tail, large protective scales, streamlined body, and eyes and nostrils that are positioned on top of head.