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

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

Ex Output:
two


Ex Input:
Nymphs feed for five to _ weeks before entering the adult stage.

Ex Output:
eight


Ex Input:
Morality is a biological adaptation _ less than are hands and feet and teeth.

Ex Output:

no