YOU SAID:

Why are potatoes so good?

INTO JAPANESE

ジャガイモが良い理由

BACK INTO ENGLISH

Potatoes are good reasons

INTO JAPANESE

ジャガイモが良い理由です。

BACK INTO ENGLISH

This is why potatoes are good.

INTO JAPANESE

これは、ジャガイモが良い理由です。

BACK INTO ENGLISH

This is why potatoes are good.