Given a scientific passage and an answer, generate a question for the given answer.

Example Input: Passage: If the experimental value is less than the accepted value, the error is negative. If the experimental value is larger than the accepted value, the error is positive. Often, error is reported as the absolute value of the difference in order to avoid the confusion of a negative error. The percent error is the absolute value of the error divided by the accepted value and multiplied by 100%. Answer: negative
Example Output: If the experimental value is less than the accepted value, the error is what?

Example Input: Passage: Immune system organs include bone marrow, the thymus gland, the spleen, and the tonsils. Each organ has a different job in the immune system. Answer: immune system
Example Output: Bone marrow, the thymus gland, the spleen, and the tonsils are organs in what body system?

Example Input: Passage: The lungs are the main organs of the respiratory system. This is where gases are exchanged between the air and the blood. Gases are also transported by the blood and exchanged between the blood and all the cells of the body. Answer: lungs
Example Output:
What are the main organs of the respiratory system?

