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

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

Ex Output:
four


Ex Input:
Disruptive selection can lead to _ new species.

Ex Output:
two


Ex Input:
Urushiol oil can be active on any surface for _ years and possibly longer.

Ex Output:

five