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: Cleavage is perfect in ____ directions forming rhombs.
Example Output: three

Example Input: Lions spend much of their time resting and are active only about ____ hours every day.
Example Output: four

Example Input: Tobacco smoke contains more than ____ thousand substances, most of which are harmful.
Example Output:
four