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

Ex Input:
Animals develop either two or _ embryonic germs layers .

Ex Output:
three

Ex Input:
Lantanas bloom in a dense head with individual tubular florets with four or _ lobes.

Ex Output:
five

Ex Input:
Tee ball is the entry sport to baseball for young players, generally four to _ years old.

Ex Output:
eight