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

Ex Input:
Mangroves dominate _ quarters of tropical coastlines.

Ex Output:
three

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

Ex Output:
five

Ex Input:
Outer shells can hold more electrons but are considered stable when they contain _ electrons.

Ex Output:
eight