YOU SAID:
Bosco went to the park
INTO JAPANESE
ボスコは公園に行った
BACK INTO ENGLISH
He went to the Park
INTO JAPANESE
彼は公園に行った
BACK INTO ENGLISH
He went to the Park.
INTO JAPANESE
彼は公園へ行きました。
BACK INTO ENGLISH
He went to the Park.
That didn't even make that much sense in English.