YOU SAID:
I knew a man with a sword once
INTO JAPANESE
私は一度剣を持つ男を知っていた
BACK INTO ENGLISH
I knew a man once with the sword
INTO JAPANESE
一度剣を持った男を知っていた
BACK INTO ENGLISH
The man with the sword once knew
INTO JAPANESE
剣を持つ男がかつて知っていた
BACK INTO ENGLISH
Once knew a man with a sword
INTO JAPANESE
剣を持つ男がかつて知っていた
BACK INTO ENGLISH
Once knew a man with a sword
That didn't even make that much sense in English.