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

Ex Input:
Cats There are thirty _ recognised species of cats and a whole host of subspecies or races.

Ex Output:
five

Ex Input:
Giraffes have two horns and _ or three knobs.

Ex Output:
two

Ex Input:
Smoking is responsible for _ in five deaths in Canada.

Ex Output:
one