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

Input: Consider Input: Titanium is found in column _ along with chemically similar zirconium, hafnium, and thorium.

Output: four


Input: Consider Input: Most people are legally drunk after _ or two drinks.

Output: one


Input: Consider Input: Pain medications ease the discomfort which can last for up to _ days.


Output: seven