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: Theobroma oil can exist in four different polymorphic forms of which only ____ is stable.
Example Output: one

Example Input: Tall fescue produces the ____ diazaphenanthrene alkaloids, perlolidone and perloline.
Example Output: two

Example Input: Maple syrup is divided into ____ grades.
Example Output:
four