Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the capillaries.

Output: When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the what?


Input: Consider Input: The metallic bond is responsible for the properties of metals.

Output: What is responsible for the properties of metals?


Input: Consider Input: Cells are the specialized building blocks of your body.


Output: What are the specialized building blocks of your body?