YOU SAID:

why does me know this

INTO JAPANESE

なぜ私はこれを知っているのですか

BACK INTO ENGLISH

Why do I know this

INTO JAPANESE

なぜこれを知っているのですか

BACK INTO ENGLISH

Why do you know this

INTO JAPANESE

これはどう？

BACK INTO ENGLISH

Ah, here we are.

INTO JAPANESE

ありました

BACK INTO ENGLISH

Ah, here we are.