YOU SAID:
The was an old woman who swallowed a fly.
INTO JAPANESE
フライを飲み込んだ古い女性だった。
BACK INTO ENGLISH
It was the old lady swallowed a fly.
INTO JAPANESE
老婦人を飲み込んだハエだった。
BACK INTO ENGLISH
It was an old woman who swallowed fly.
INTO JAPANESE
フライを飲み込んだ歳の女性だった。
That didn't even make that much sense in English.