YOU SAID:
the dog is on the log
INTO JAPANESE
犬は丸太の上にある
BACK INTO ENGLISH
The dog is on the log.
INTO JAPANESE
犬は丸太の上にあります。
BACK INTO ENGLISH
The dog is on a log.
INTO JAPANESE
犬は丸太の上にあります。
BACK INTO ENGLISH
The dog is on a log.
That didn't even make that much sense in English.