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.

[Q]: Question: All of the petals together are called what? Answer: corolla
[A]: All of the petals together are called a corolla.

[Q]: Question: The structure of mitochondrion plays an important role in what? Answer: aerobic respiration
[A]: The structure of mitochondrion plays an important role in aerobic respiration.

[Q]: Question: Compounds with aluminum and silicon are commonly found in the clay fractions of soils derived from what? Answer: volcanic ash
[A]:
Compounds with aluminum and silicon are commonly found in the clay fractions of soils derived from volcanic ash.