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

Ex Input:
Rodents have _ toes on their front feet and five on the hind feet.

Ex Output:
four

Ex Input:
Boolean operations is a method of combining _ meshes together.

Ex Output:
two

Ex Input:
Mango trees begin fruit production in _ years and form fruit quickly.

Ex Output:
three