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: Babies can be exclusively breast-fed for their first ____ months of life.
Example Output: six

Example Input: Acupuncture needles are about two to ____ inches long.
Example Output: three

Example Input: Quarks can have ____ colors, red, green and blue.
Example Output:
three