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: Arthritis is characterised by ____ major observable changes in the joints.
Example Output: four

Example Input: Most people stay three or four years, sometimes five or ____ years.
Example Output: six

Example Input: Light can go around the earth three times in ____ second .
Example Output:
one