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

Input: Consider Input: Females inherit _ X chromosomes, one from each parent.

Output: two


Input: Consider Input: Willow flycatchers have a lifespan of _ to four years.

Output: three


Input: Consider Input: Beavers are from five to _ years old, usually in kindergarten, grade one, or grade two.


Output: seven