Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
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Question: Birds have ____ basic types of feathers.

Answer: three


Question: Brown rice has five times more Vitamin E and ____ times more magnesium.

Answer: three


Question: Most wedges are combinations of ____ inclined planes.

Answer:
two