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: Many addicts use opium because they have ____ access to public health care facilities.
Example Output: no

Example Input: Wrinkles begin to form at ____ weeks.
Example Output:
eight