YOU SAID:

I slaughtered a family of five

INTO JAPANESE

私は5人の家族を殺した

BACK INTO ENGLISH

I killed a family of five

INTO JAPANESE

5 人の家族を殺されました。

BACK INTO ENGLISH

The family of five was killed.

INTO JAPANESE

5 つの家族が殺されました。

BACK INTO ENGLISH

Five family members were killed.

INTO JAPANESE

5 つの家族が殺されました。

BACK INTO ENGLISH

Five family members were killed.