Complex sentence: Boston University Central is a surface-level station on the MBTA Green Line "B" Branch, located the center median of Commonwealth Avenue west of St. Marys Street in Boston, Massachusetts, surrounded by the Boston University campus.
Split into simpler sentences: Boston University Central is a surface-level station on the MBTA Green Line "B" Branch located in Boston, Massachusetts. The station is located in the center median of Commonwealth Avenue west of St. Marys Street, surrounded by the Boston University campus.