YOU SAID:

jimmy was a turtle and a turtle was jimmy

INTO JAPANESE

ジミーはカメ、カメはジミーでした

BACK INTO ENGLISH

Jimmy was Jimmy turtle, turtle

INTO JAPANESE

ジミーはジミーのカメ、カメ

BACK INTO ENGLISH

Jimmy's Jimmy's tortoise, tortoise

INTO JAPANESE

ジミーのジミーのカメ、カメ

BACK INTO ENGLISH

Jimmy's Jimmy's tortoise, tortoise