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: Bond angles The bond angle defined by ____ atoms is calculated.
Example Output: three

Example Input: Multiplications are always ____ complemental.
Example Output: two

Example Input: Healthy people recover rapidly in two to ____ days.
Example Output:
five