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

Input: Consider Input: Spatial sensors work in one, two, or _ dimensions.

Output: three

Input: Consider Input: Black people live about _ fewer years, on average, than white people do.

Output: six

Input: Consider Input: Bowhead whales are slow swimmers and usually travel alone or in small herds of up to _ animals.
Output: six