YOU SAID:

the cat was fat then it ate a rat then it exploded

INTO JAPANESE

猫は太っていたのでネズミを食べて爆発した

BACK INTO ENGLISH

The cat was fat, so he ate a mouse and exploded.

INTO JAPANESE

猫は太っていたので、ネズミを食べて爆発しました。

BACK INTO ENGLISH

The cat was fat, so he ate a mouse and exploded.