YOU SAID:
I put the baby in the oven because he was cold
INTO JAPANESE
彼は寒かったので、赤ちゃんをオーブンに入れました
BACK INTO ENGLISH
He put her baby in the oven because it was cold
INTO JAPANESE
寒かったので彼は彼女の赤ん坊をオーブンに入れた
BACK INTO ENGLISH
He put her baby in the oven because it was cold
Well done, yes, well done!