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.

Question: Where is the hypothalamus–pituitary complex located in the body? Answer: diencephalon of the brain
The hypothalamus–pituitary complex is located in the body in the diencephalon of the brain.

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

Question: The nucleus is comprised primarily of? Answer: empty space

The nucleus is comprised primarily of empty space.