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

Ex Input:
Sexual selection has _ components, intrasexual competition and intersexual selection.

Ex Output:
two

Ex Input:
Cancer can develop in any of the _ sections of the colon or in the rectum.

Ex Output:
four

Ex Input:
Software usually has an average life of _ years.

Ex Output:
three