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: Titanium is found in column ____ along with chemically similar zirconium, hafnium, and thorium.
Example Output: four

Example Input: Cleavage is good in ____ directions at right angles.
Example Output: two

Example Input: Shigellosis is extremely rare below the age of ____ months.
Example Output:
six