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: Pertussis is highly contagious with symptoms that can linger ____ to ten weeks.
Example Output: six

Example Input: Meerkats are gregarious and have at least ____ distinctive vocalizations.
Example Output:
ten