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

Ex Input:
Mental illness affects _ out of four families in America.

Ex Output:
one

Ex Input:
Some bird feeders have _ perches at all, but neither do tree trunks.

Ex Output:
no

Ex Input:
Developmental biologists are _ less attracted by the nervous system than cell biologists.

Ex Output:
no