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

Ex Input:
Communion is that which is shared between the _ persons of the Holy Trinity.

Ex Output:
three


Ex Input:
Angiosperms are divided into _ groups- monocots and dicots.

Ex Output:
two


Ex Input:
Large complexes are apartment buildings or complexes with _ or more dwelling units.

Ex Output:

six