YOU SAID:
YOU WON'T BELIEVE WHAT HAPPENED TO THIS TRANSLATION
INTO JAPANESE
あなたはこの翻訳に何が起こったとは思わない。
BACK INTO ENGLISH
You do not think anything has happened to this translation.
INTO JAPANESE
あなたはこの翻訳に何かが起こったとは思わない。
BACK INTO ENGLISH
You do not think anything has happened to this translation.
That didn't even make that much sense in English.