YOU SAID:

the house was on fire and it was not my fault

INTO JAPANESE

その家は火事で、私のせいではなかった

BACK INTO ENGLISH

the house was on fire and not my fault

INTO JAPANESE

家は燃えていて、私のせいではなかった

BACK INTO ENGLISH

The house was on fire, and it wasn't my fault.

INTO JAPANESE

家が火事になったのは私のせいじゃない

BACK INTO ENGLISH

It's not my fault the house was on fire.

INTO JAPANESE

家が火事になったのは私のせいではない。

BACK INTO ENGLISH

It is not my fault that the house caught fire.

INTO JAPANESE

家が火事になったのは私のせいではない。

BACK INTO ENGLISH

It is not my fault that the house caught fire.