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

Input: Consider Input: Autism is _ to four times more likely to affect boys than girls.

Output: three


Input: Consider Input: Excess potassium induces larval metamorphosis in _ marine invertebrate species.

Output: four


Input: Consider Input: Cattle can have up to six to _ years of grazing, after which a scrub savannah grows up.


Output: ten


