Task: Paraphrasing
Input (English): Question: Which gland is controlled by a negative feedback loop that includes the hypothalamus and pituitary gland? 
Answer: thyroid. 
Sentence: The thyroid gland is controlled by a negative feedback loop that includes the hypothalamus and pituitary gland.
Output (English): The hypothalamus and pituitary gland make up a negative feedback loop that controls the thyroid.