YOU SAID:
My homework was not stolen by a one-armed man
INTO JAPANESE
私の宿題は武装した男によって盗まれなかった
BACK INTO ENGLISH
My homework was not stolen by armed man
INTO JAPANESE
宿題は武装した男によって盗まれていません。
BACK INTO ENGLISH
My homework was not stolen by armed men.
INTO JAPANESE
宿題は武装した男たちによって盗まれていません。
BACK INTO ENGLISH
My homework was not stolen by armed men.
That didn't even make that much sense in English.