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.

Ex Input:
Some botanists recognise ____ botanical varieties.

Ex Output:
two

Ex Input:
Ozone is formed of ____ atoms of oxygen.

Ex Output:
three

Ex Input:
Newborns routinely cry a total of ____ to four hours per day.

Ex Output:
one