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.

Ex Input:
Insomnia can be short-lived, lasting only one to ____ nights.

Ex Output:
two


Ex Input:
Binary distillation is a separation of only ____ chemicals.

Ex Output:
two


Ex Input:
Human knowledge is limited to what can be experience with the ____ senses.

Ex Output:

five