YOU SAID:
a dog went to the park
INTO JAPANESE
犬が公園に行きました
BACK INTO ENGLISH
Dog went to the park
INTO JAPANESE
犬は公園に行きました
BACK INTO ENGLISH
The dog went to the park
INTO JAPANESE
犬は公園に行きました
BACK INTO ENGLISH
The dog went to the park
Come on, you can do better than that.