YOU SAID:
That's when the cannibalism started
INTO JAPANESE
それは共食いが始まったときです
BACK INTO ENGLISH
That ’s when cannibalism began.
INTO JAPANESE
それが共食いが始まったときです。
BACK INTO ENGLISH
That is when cannibalism has begun.
INTO JAPANESE
それが共食いが始まったときです。
BACK INTO ENGLISH
That is when cannibalism has begun.
That didn't even make that much sense in English.