Complex sentence: Armour Square is a Chicago neighborhood on the city's South Side, as well as a larger, officially defined community area which also also includes Chinatown and the CHA Wentworth Gardens housing project.
Split into simpler sentences: Armour Square is both the name of a Chicago neighborhood on the city's South Side, as well as the larger, officially defined community area that the neighborhood is located in. The Armour Square community area also includes Chinatown and the CHA Wentworth Gardens housing project.