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: Most bioluminescence is blue for ____ reasons.
Example Output: two

Example Input: Weight is proportionate to body volume, measured in ____ dimensions.
Example Output: three

Example Input: Traffic accidents are the number ____ cause of death for children, ages five to fifteen.
Example Output:
one