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: Fire occurs any time ____ elements are present - fuel, heat, oxygen and the chemical chain reaction.

Answer: four

Question: Conversations overlap, especially when more than three people try to talk in ____ room.

Answer: one

Question: Fathers invest in shoes for feet that mature in ____ weeks.

Answer:
six