YOU SAID:
The dog went to find a bog with a hog.
INTO JAPANESE
犬は豚のいる沼地を探しに行きました。
BACK INTO ENGLISH
The dog went looking for a swamp where the pigs were.
INTO JAPANESE
犬は豚がいる沼地を探しに行きました。
BACK INTO ENGLISH
The dog went looking for a swamp where the pigs were.
That didn't even make that much sense in English.