YOU SAID:

I am sitting on a chair eating lobster

INTO JAPANESE

私はロブスターを食べる椅子に座ってください。

BACK INTO ENGLISH

I sit in a Chair to eat crayfish.

INTO JAPANESE

ザリガニを食べるために椅子に座る。

BACK INTO ENGLISH

To eat crayfish sitting on a Chair.

INTO JAPANESE

椅子に座っているザリガニを食べる。

BACK INTO ENGLISH

Eat the crayfish sitting on a Chair.

INTO JAPANESE

椅子に座っているザリガニを食べる。

BACK INTO ENGLISH

Eat the crayfish sitting on a Chair.