YOU SAID:

I refuse to answer that question on the grounds that I don't know the answer

INTO JAPANESE

答えを知らないことを理由にその質問に答えることを拒否します。

BACK INTO ENGLISH

Refuse to answer that question because you do not know the answer.

INTO JAPANESE

答えがわからないのでその質問に答えることを断る。

BACK INTO ENGLISH

Refuse to answer that question because I do not know the answer.

INTO JAPANESE

私は答えを知らないのでその質問に答えることを断る。

BACK INTO ENGLISH

Refuse to answer that question because I don't know the answer.

INTO JAPANESE

答えを知らないのでその質問に答えることを断る。

BACK INTO ENGLISH

Refuse to answer because I do not know the answer to that question.

INTO JAPANESE

私はその質問への答えを知っていないために答えることを断る。

BACK INTO ENGLISH

Refuse to answer because I don't know the answer to that question.

INTO JAPANESE

私はその質問への答えを知らないので答えを拒否します。

BACK INTO ENGLISH

Denies the answer because I don't know the answer to that question.

INTO JAPANESE

私はその質問への答えを知らないので答えを拒否します。

BACK INTO ENGLISH

Denies the answer because I don't know the answer to that question.