In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Ex Input:
Polymorphism occurs in all species and the mandibles bear _ teeth.

Ex Output:
four

Ex Input:
New species are believed to arrive in the Mediterranean at the rate of _ to five annually.

Ex Output:
four

Ex Input:
Long grain is _ times as long as it is wide, for instance.

Ex Output:
three