YOU SAID:

the texture of quiche is questionable

INTO JAPANESE

キッシュの食感に疑問がある

BACK INTO ENGLISH

I have doubts about the texture of the quiche.

INTO JAPANESE

キッシュの食感には疑問があります。

BACK INTO ENGLISH

The texture of the quiche is questionable.

INTO JAPANESE

キッシュの食感は疑問です。

BACK INTO ENGLISH

The texture of the quiche is questionable.