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

Ex Input:
Passage: The global pattern of precipitation is influenced by movements of air masses. For example, there is a global belt of dry air masses and low precipitation at about 30 N and 30 S latitude. Answer: air masses

Ex Output:
The global pattern of precipitation is influenced by movements of what?

Ex Input:
Passage: Vascular tissue runs through the ground tissue inside a plant. It transports fluids throughout the plant. Vascular tissue actually consists of two types of tissues, called xylem and phloem. The two types of vascular tissue are packaged together in bundles. You can see them in the celery in Figure below . Answer: xylem and phloem

Ex Output:
What are the two types of vascular tissues?

Ex Input:
Passage: a phosphate group, which contains phosphorus and oxygen. Answer: flowers and fruit

Ex Output:
What do angiosperms produce?