YOU SAID:
The cat went to the market
INTO JAPANESE
猫は市場に行きました
BACK INTO ENGLISH
Cats went to the market
INTO JAPANESE
猫が市場に行きました
BACK INTO ENGLISH
A cat went to the market
INTO JAPANESE
猫が市場に行きました
BACK INTO ENGLISH
A cat went to the market
That didn't even make that much sense in English.