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

Ex Input:
Figure skating is like flying, but it's also like climbing hundreds of stairs in _ minutes.

Ex Output:
four


Ex Input:
Thermal equilibrium occurs when _ bodies have the same temperature.

Ex Output:
two


Ex Input:
Apple trees take four to _ years to produce their first fruit.

Ex Output:

five