YOU SAID:
She sells sea shells on the sea shore. The sea shells she sells are sea shells I'm sure.
INTO JAPANESE
彼女は海岸で貝殻を売っています。彼女が売っている貝殻は貝殻だよね。
BACK INTO ENGLISH
She sells shells on the coast. The shells she sells are shells.
INTO JAPANESE
彼女は海岸で貝殻を売っています。彼女が売っている殻は殻です。
BACK INTO ENGLISH
She sells shells on the coast. The shell she is selling is a shell.
INTO JAPANESE
彼女は海岸で貝殻を売っています。彼女が売っている殻は殻です。
BACK INTO ENGLISH
She sells shells on the coast. The shell she is selling is a shell.
That didn't even make that much sense in English.