YOU SAID:
The giant dragon didnt know
INTO JAPANESE
巨竜は知らなかった
BACK INTO ENGLISH
The dragon didn't know.
INTO JAPANESE
ドラゴンは知らなかった
BACK INTO ENGLISH
I didn't know about the dragon.
INTO JAPANESE
私はドラゴンのことを知らなかった。
BACK INTO ENGLISH
I didn't know about dragons.
INTO JAPANESE
私はドラゴンのことを知らなかった。
BACK INTO ENGLISH
I didn't know about dragons.
That didn't even make that much sense in English.