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: A binary molecular compound is made up of two of what? Answer: elements
Example Output: A binary molecular compound is made up of two  elements.

Example Input: Question: What type of substance is any matter that has a fixed chemical composition and characteristic properties? Answer: pure chemical substance
Example Output: Pure chemical substance type of substance is any matter that has a fixed chemical composition and characteristic properties.

Example Input: Question: What is the source of most electricity? Answer: coal
Example Output:
Coal is the source of most electricity.