YOU SAID:

There's a purple ruler on my desk.

INTO JAPANESE

私の机の上に紫定規があります。

BACK INTO ENGLISH

Purple ruler on my desk.

INTO JAPANESE

私の机の上の紫の定規。

BACK INTO ENGLISH

The ruler of the purple on my desk.

INTO JAPANESE

私の机の上の紫色の定規。

BACK INTO ENGLISH

The ruler of the purple on my desk.