YOU SAID:

Oh dear, I don't know if we know why we're here

INTO JAPANESE

ああ、私たちがなぜここにいるのか分かりません

BACK INTO ENGLISH

Oh, I do not know why we are here

INTO JAPANESE

ああ、なぜ私たちがここにいるのかわからない

BACK INTO ENGLISH

Oh, I do not know why we are here