YOU SAID:

what is not is but not is when it is not

INTO JAPANESE

そうでないものはありませんが、そうでないときはありません

BACK INTO ENGLISH

There is nothing that is not the case, but it is not the case

INTO JAPANESE

事件ではないものは何もありませんが、そうではありません

BACK INTO ENGLISH

There is nothing that is not a case, but it is not so

INTO JAPANESE

事件ではないものは何もないが、そうではない

BACK INTO ENGLISH

There is nothing that is not a case, but it is not so