YOU SAID:

I parked my car in boston yard

INTO JAPANESE

私はボストンヤードに車を駐車しました

BACK INTO ENGLISH

I parked my car in the Boston yard

INTO JAPANESE

車をボストンの庭に駐車しました

BACK INTO ENGLISH

I parked my car in the yard of Boston

INTO JAPANESE

私はボストンの庭に車を駐車しました

BACK INTO ENGLISH

I parked my car in the yard of Boston