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 Q]: Question: What is formed when a subducting plate flows under another tectonic plate? Answer: volcanic arc
[EX A]: A volcanic arc is formed when a subducting plate flows under another tectonic plate.

[EX Q]: Question: Of the nine classes of vertebrates, how many are fish? Answer: five
[EX A]: Of the nine classes of vertebrates, five many are fish.

[EX Q]: Question: Vertical layering is an important feature of the terrestrial type of what kind of community? Answer: biome
[EX A]:
Vertical layering is an important feature of the terrestrial type of biome kind of community.