YOU SAID:

It was the first time he had ever seen someone cook dinner on an elephant.

INTO JAPANESE

彼は初めて象の上で夕食を作る人を見た。

BACK INTO ENGLISH

He saw for the first time a man cooking dinner on an elephant.

INTO JAPANESE

彼は初めてゾウの上で夕食を作っている男を見た。

BACK INTO ENGLISH

He saw for the first time a man cooking dinner on an elephant.