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

Input: Consider Input: Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.

Output: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms?

Input: Consider Input: Sodium chloride is an odorless white solid that is harmless unless consumed in large quantities.

Output: What is an odorless white solid that is harmless unless consumed in large quantities?

Input: Consider Input: Pulmonary and systemic circulation loops are part of cardiovascular organ system.
Output: Pulmonary and systemic circulation loops are part of what organ system?