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: Blisters normally burst and crust over within three to ____ days.
Example Output: five

Example Input: Snow leopards eat almost anything they can catch, often hunting animals ____ times their size.
Example Output: three

Example Input: Economists divide resources into ____ basic categories of land, labor, capital, and management.
Example Output:
four