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

Ex Input:
Melanocytes are dendritic and are distributed roughly _ per six basal cells.

Ex Output:
one


Ex Input:
Dwarf trees are diminutive and shrub-like, reaching _ feet or so at maturity.

Ex Output:
four


Ex Input:
Sheep milk has about eight percent butterfat, compared to _ or four percent in cow's milk.

Ex Output:

three