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: Some programming languages have ____ or more standards .

Answer: two


Question: Birds have ____ basic types of feathers.

Answer: three


Question: Elimination is the reduction to ____ of the incidence of infection in a defined geographic area.

Answer:
zero