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.

Ex Input:
Question: What is it called when poles are in opposite positions? Answer: reversed polarity

Ex Output:
Reversed polarity is it called when poles are in opposite positions.

Ex Input:
Question: Exposure to what can increase the amount of pigment in the skin and make it appear darker? Answer: ultraviolet radiation

Ex Output:
Exposure to ultraviolet radiation can increase the amount of pigment in the skin and make it appear darker.

Ex Input:
Question: What is the term for the wavelengths of light humans can see? Answer: visible light

Ex Output:
Visible light is the term for the wavelengths of light humans can see.