Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Mucous does the esophagus produce for lubrication.

Answer: What does the esophagus produce for lubrication?


Question: Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond.

Answer: What is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond?


Question: Oxygen is transferred through capillaries.

Answer:
Which blood vessels is oxygen transferred through?