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

Ex Input:
Passage: David Remahl. Polygenic traits result in a distribution that resembles a bell-shaped curve . The creator of this work allows anyone to use it for any purpose including unrestricted redistribution, commercial use, and modification. Answer: bell-shaped

Ex Output:
Polygenic traits result in a distribution that resembles a curve. what is the shape of the curve?

Ex Input:
Passage: Triglycerides are the main form of stored energy in animals. This type of lipid is commonly called fat. Triglycerides are composed of a glycerol and three fatty acid chains. An example is shown in Figure below . In humans, triglycerides are a mechanism for storing unused calories, and their high concentration in blood correlates with the consumption of excess starches and other carbohydrate-rich foods. Answer: triglycerides

Ex Output:
What stored form of energy is made up of glycerol and three fatty acid chains?

Ex Input:
Passage: Nitrogen-fixing bacteria change nitrogen gas from the atmosphere to nitrates in soil. Answer: nitrogen fixing bacteria

Ex Output:
What type of bacteria change nitrogen gas from the atmosphere to nitrates in soil?