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: What type of friction is friction that acts on objects when they are sliding over a surface? Answer: sliding friction
Example Output: Sliding friction is friction that acts on objects when they are sliding over a surface.

Example Input: Question: When does the diploid zygote form? Answer: after the pollen tube
Example Output: After the pollen tube does the diploid zygote form.

Example Input: Question: Some gametophytes develop underground and form mycorrhizal associations with what? Answer: fungi
Example Output:
Some gametophytes develop underground and form mycorrhizal associations with fungi.