YOU SAID:
Colin caterpillar went to a hospital
INTO JAPANESE
コリン・キャタピラーは病院に行った
BACK INTO ENGLISH
Colin Caterpillar went to the hospital.
INTO JAPANESE
コリン・キャタピラーは病院に行きました。
BACK INTO ENGLISH
Colin Caterpillar went to the hospital.
That didn't even make that much sense in English.