YOU SAID:

the dog ate the man who ate the cat who ate the mouse

INTO JAPANESE

犬はネズミを食べた猫を食べた男を食べた

BACK INTO ENGLISH

The dog ate the man who ate the cat who ate the mouse

INTO JAPANESE

犬はねずみを食べた猫を食べた男を食べた

BACK INTO ENGLISH

The dog ate the man who ate the cat who ate the mouse