In this task, you are given a paragraph, and your task is to construct a question from the given passage. Construct question in such a way that (i) it is well explained in the paragraph, (ii) the words may/may not be present in the paragraph, (iii) it should start with what/how/describe. Avoid creating a question that (i) is just relevant to one or two sentences, and (ii) not relevant to passage. 

Input: Consider Input: You find an empty ice cube tray. You fill the tray with warm water. You carefully place the tray on an even surface in a freezer that is at least 32 degree Farhenheit, the freezing point of water. The water begins to get colder until it starts to freeze solid. The water expands as it freezes, one of the few liquids that has greater volume as a solid. Because you used warm water, the gasses in the water had evaporated out, so you will have nice clear ice cubes without cracks from the trapped gasses. 

Output: How do you make ice cubes?


Input: Consider Input: Pressure happens underground. Tectonic plates underground pull and stretch. Small cracks are formed in the earth's crust. The tectonic plates push hard against each other. Some parts of the earth's crust move up high above the ground. 

Output: How do mountains form?


Input: Consider Input: Food is put into mouth. Food is chewed and mixed with saliva (spit). Food travels down the esophagus (throat). Food travels into the stomach. Acid in the stomach breaks the food down further. Food travels into the small intestine. Nutrients from food are absorbed into the blood stream. Food travels into the large intestine. Most of the remaining material is now waste. The waste is eventually removed from the body. 


Output: Describe the process of digestion