YOU SAID:
i am not holding a heavy cover
INTO JAPANESE
私は重いカバーを持っていません
BACK INTO ENGLISH
I don't have a heavy cover
INTO JAPANESE
重いカバーはありません
BACK INTO ENGLISH
There is no heavy cover
INTO JAPANESE
重いカバーはありません
BACK INTO ENGLISH
There is no heavy cover
That didn't even make that much sense in English.