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: When blood vessels in the head dilate, what kind of severe headache can occur? Answer: migraine
When blood vessels in the head dilate, a migraine, a severe headache, can occur.

Question: What is the hollow and muscular balloon-shaped organ that collects urine? Answer: urinary bladder
The urinary bladder is the hollow and muscular balloon-shaped organ that collects urine.

Question: Which area in a lake is likely to have more nutrients? Answer: bottom

Bottom area in a lake is likely to have more nutrients.