instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
One gram of sugar or starch provides 4 calories of energy.
answer:
How many calories of energy does one gram of sugar or starch provide?


question:
Glaciers deposit their sediment when they melt.
answer:
When do glaciers deposit their sediment?


question:
Bases normally have a bitter taste.
answer:

What type of taste do bases normally have?