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

Input: Consider Input: Death usually occurs by five to _ years of life due to pneumonia or other infections.

Output: eight

Input: Consider Input: Plants have many white flowers with _ petals, giving the plant a white, flat-topped appearance.

Output: four

Input: Consider Input: Jazz blues uses many more chords and chord types than the standard _ chord blues progression.
Output: three