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

Ex Input:
Cluster flies are covered with fine golden hairs and have _ stripes on the thorax.

Ex Output:
no

Ex Input:
Catholic systems comprise _ of the twenty largest healthcare systems in the country.

Ex Output:
ten

Ex Input:
Oysters reach a harvestable size in South Carolina at an age of about _ years.

Ex Output:
three