YOU SAID:

rich set a fire and he burnt down the house

INTO JAPANESE

金持ちは火をつけ、彼は家を全焼した

BACK INTO ENGLISH

The rich lit the fire and he burned the house

INTO JAPANESE

金持ちは火をつけ、彼は家を燃やした

BACK INTO ENGLISH

The rich lit the fire and he burned the house