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

Ex Input:
Passage: Centrioles are rod-like structures made of short microtubules. Nine groups of three microtubules make up each centriole. Two perpendicular centrioles make up the centrosome . Centrioles are very important in cellular division, where they arrange the mitotic spindles that pull the chromosome apart during mitosis. Answer: centrioles

Ex Output:
What are the rod-like structures made of short microtubules that play an important part in cellular division?

Ex Input:
Passage: Conditioning is a way of learning that involves a reward or punishment. If you ever trained a dog to obey a command, you probably gave the dog a tasty treat each time he performed the desired behavior. It may not have been very long before the dog would reliably follow the command in order to get the treat. This is an example of conditioning that involves a reward. Answer: conditioning

Ex Output:
The way of learning that involves reward and punishment is called?

Ex Input:
Passage: Solution: The force acting to move the system is the weight of box B, and the force resisting the movement is the force of friction between the table and box A. The mass of the system is the sum of the masses of both boxes. The acceleration of the system can be found by dividing the net force by the total mass. Answer: acceleration

Ex Output:
Dividing net force by total mass yields what?