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: When magma reaches the surface through cracks in the earth's crust, what occurs? Answer: volcanic eruption
Example Output: When magma reaches the surface through cracks in the earth's crust, a volcanic eruption occurs.

Example Input: Question: Which of the following processes is responsible for changing liquid water into water vapor? Answer: evaporation
Example Output: Evaporation is responsible for changing liquid water into water vapor.

Example Input: Question: Soil forms where land areas are what? Answer: flat
Example Output:
Soil forms where land areas are flat.