Complex sentence: Massachusetts General Hospital and the Charles Street Jail are located in the North West Section while sections of Government Center compromises the Southern section the North most area is now habited by North Station and the TD Banknorth Garden.
Split into simpler sentences: Massachusetts General Hospital and the Charles Street Jail are located in the northwest section, while Government Center compromises the southern section. Most of the northern section is covered by North Station and the TD Banknorth Garden.