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: Luminosity decreases by almost four orders of magnitude in approximately ____ million years.
Example Output: five

Example Input: All cars are things that have ____ wheels.
Example Output: four

Example Input: Antibodies exist as ____ or more copies of a Y-shaped unit, composed of four polypeptide chains.
Example Output:
one