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

Input: Consider Input: Passage: The solubility of gases is also affected by pressure. Pressure is the force pushing against a given area. Increasing the pressure on a gas increases its solubility. Did you ever open a can of soda and notice how it fizzes out of the can? Soda contains dissolved carbon dioxide. Opening the can reduces the pressure on the gas in solution, so it is less soluble. As a result, some of the carbon dioxide comes out of solution and rushes into the air. Answer: increase

Output: Increasing the pressure on a gas has what effect on its solubility?

Input: Consider Input: Passage: Identify evidence for electroweak unification. The quarks in a particle are confined, meaning individual quarks cannot be directly observed. Are gluons confined as well? Explain. Answer: directly observed

Output: The quarks in a particle are confined, meaning individual quarks cannot be what?

Input: Consider Input: Passage: Transport vesicles are able to move molecules between locations inside the cell. For example, transport vesicles move proteins from the rough endoplasmic reticulum to the Golgi apparatus. Answer: transport vesicles
Output: What cellular structure moves molecules between locations inside the cell?