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

Ex Input:
Birds begin dying of fowl cholera _ to nine days after exposed to the virus.

Ex Output:
four


Ex Input:
Horse chestnuts have opposite branching and a compound leaf, which is palmate, with _ leaflets.

Ex Output:
five


Ex Input:
Today there are _ main areas of focus in applied sports psychology .

Ex Output:

three