Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Input: Consider Input: Stems are of ____ types, flowering and vegetative.

Output: two

Input: Consider Input: Lunar eclipses occur every ____ months, on average.

Output: six

Input: Consider Input: Scandium is a silvery metal that is soft and has a density of about ____ times that of water.
Output: three