YOU SAID:

And surely my parents also knew it, and surely they also died .

INTO JAPANESE

確かに私の両親もそれを知っていたし、確かに彼らも死んだ。

BACK INTO ENGLISH

Certainly my parents knew it, and they certainly died.

INTO JAPANESE

確かに私の両親はそれを知っていて、彼らは確かに死んだ。

BACK INTO ENGLISH

Certainly my parents knew it, they certainly died.

INTO JAPANESE

確かに私の両親はそれを知っていた、彼らは確かに死亡した。

BACK INTO ENGLISH

Certainly my parents knew it, they certainly died.