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

Ex Input:
Osteoporosis is _ to four times more common in woman than men.

Ex Output:
three


Ex Input:
Sea urchins have _ paired rows of tiny tube feet which are found amongst the spines.

Ex Output:
five


Ex Input:
Carbon atoms are special for _ reasons.

Ex Output:

two