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: Irrigation can increase land productivity by three to ____ times, especially in the north.
Example Output: seven

Example Input: Animals exhibit ____ patterns for bringing sperm and eggs together.
Example Output: two

Example Input: Scientists believe that our galaxy contains ____ to ten times as much dark matter as visible stars.
Example Output:
five