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: Seismologists offer ____ major theories for the occurrence of large, deep earthquakes.
Example Output: three

Example Input: Nymphs go through ____ instars and a pupa stage before reaching adulthood.
Example Output: three

Example Input: Cities have various sizes, and can contain from ____ to four armies depending on size.
Example Output:
one