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.

Example Input: Neuroblasts delaminate in five waves spanning approximately ____ hours.
Example Output: three

Example Input: Cardinals have ____ main functions in the church.
Example Output: three

Example Input: Alkaline batteries last five to ____ times as long as zinc-carbon cells, their predecessors.
Example Output:
eight