YOU SAID:

The fat cat slept next to the lazy dog

INTO JAPANESE

怠惰な犬の隣に眠っていた脂肪猫

BACK INTO ENGLISH

The fat cats were sleeping next to the lazy dog

INTO JAPANESE

脂肪猫が怠惰な犬の隣に寝ていた

BACK INTO ENGLISH

Was sleeping next to the fat cat lazy dog

INTO JAPANESE

ファットキャット怠惰な犬の隣に寝ていた

BACK INTO ENGLISH

Was sleeping next to the fat cat lazy dog