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.

Input: Consider Input: Most psychologists agree that the big ____ personality traits are stable across the life-span.

Output: five


Input: Consider Input: Arthritis is characterised by ____ major observable changes in the joints.

Output: four


Input: Consider Input: Tumor viruses are of ____ distinct types.


Output: two