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:
Most dens are oval shape, six to nine feet long and about ____ feet in height and width.

Ex Output:
six

Ex Input:
Spiders have only ____ body divisions and eight legs.

Ex Output:
two

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

Ex Output:
four