Question: Security Square Mall, Perry Hall and the North American School of Trades are all parts of which east-coast U.S. city?

Context articles: Exton Square Mall
Woodlawn, Baltimore County, Maryland
Seaview Square Mall
Perry Hall High School
Route 44 (MTA Maryland)
Security Square Mall
Joppa Road
Route 15 (MTA Maryland)
Route 20 (MTA Maryland)
Route 57 (MTA Maryland)

The Exton Square Mall is a shopping mall located in the village of Exton, in West Whiteland Township in Chester County, Pennsylvania, United States.
 The mall features a fountain, parking garage, and food court.
 It is located at "the crossroads of Chester County" at the intersection of U.S. Route 30 Business (US 30 Bus.)
 and Pennsylvania Route 100 (PA 100).
 The mall is anchored by Macy's, Boscov's, and Sears, and also contains over 110 smaller stores and a food court.
 The Exton Square Mall is shaped as a square, with the southern half of the mall two floors and the northern half one floor.
 Macy's is located at the center of the mall while the other two anchor stores and the food court are on corners of the mall.
 It is owned by Pennsylvania Real Estate Investment Trust (PREIT).
Woodlawn is an unincorporated community and census-designated place in Baltimore County, Maryland, United States.
 The population was 37,879 at the 2010 census.
 It is home to the headquarters of the Social Security Administration (SSA) and the Centers for Medicare and Medicaid Services (CMS).
 It is bordered by Catonsville on the south, by the Patapsco River and Howard County on the west, by Randallstown and Lochearn to the north, and by the City of Baltimore to the east.
 Parts of Woodlawn are sometimes informally referred to as Security, Maryland, due to the importance of the SSA's headquarters as well as nearby Security Boulevard (Maryland Route 122) and Security Square Mall.
Seaview Square Mall was a shopping mall located in Ocean Township, in Monmouth County, New Jersey, United States.
 It has been repurposed as a power center and was renamed Seaview Square Shopping Center in 2012.
 The 856000 sqft mall, located at the intersection of Route 35 and Route 66, was originally constructed in 1977 as an indoor mall.
 It faced stiff competition from the more upscale Monmouth Mall, located five miles (8 km) further north on Route 35.
 One of its four anchors never opened, and several smaller stores, and Stern's and Steinbach, two of its anchors, were victims of the then-indoor mall's then-state of decline.
Perry Hall High School is a public high school established in 1963 and is the largest public high school in Baltimore County, Maryland, enrolling about 2,300 students a year.
 Located in the northeastern Baltimore suburb of Perry Hall and serving the surrounding communities, such as Kingsville and Glen Arm, it is part of the Baltimore County Public Schools system.
 Area middle schools that feed into Perry Hall High are Perry Hall Middle School and Pine Grove Middle School.
Route 44 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs.
 The line currently runs from Rosedale Industrial Park near Pulaski Highway just outside the Baltimore city limits on the east side of the city across the northern portion of the city to Security Square Mall, with selected peak hour trips to the Social Security Administration.
 Some early morning trips before 7 AM lay over at the Centers for Medicare and Medicaid Services (CMS) headquarters.
 The line operates mostly along Frankford Avenue, Echodale Avenue, East Belvedere Avenue, Northern Parkway, Rogers Avenue, and Gwynn Oak Avenue, serving the communities of Gardenville, Hamilton, Belvedere Park, Homeland, Roland Park, Pimlico, and Arlington, and the western suburb of Woodlawn.
Security Square Mall is a large mall in the suburbs of Baltimore, Maryland, United States.
 The mall features over 100 stores and restaurants, as well as a food court, with Burlington Coat Factory, Macy's, Old Navy and Sears serving as anchor stores.
 One section of the mall, Seoul Plaza (formerly JCPenney), previously included Korean shops and restaurants; however, most of these establishments had closed by 2010.
 Modell's Sporting Goods at Security closed down in late 2008 and now is a USA Discounters store.
 Security Square Mall is located adjacent to the North American School of Trades.
Joppa Road is a county highway in the U.S. state of Maryland.
 The highway extends 14.3 mi from Maryland Route 25 (MD 25) in Brooklandville east to MD 7 near White Marsh.
 Joppa Road has three main segments separated by very short breaks on its course through central and eastern Baltimore County.
 The central segment is a multi-lane highway from MD 45 and MD 146 in the county seat of Towson to U.S. Route 1 (US 1) in Perry Hall.
 This highway is mostly a commercial strip and parallels Interstate 695 (I-695) through Towson, Parkville, and Carney.
 The western and eastern segments of Joppa Road are two-lane roads through mainly residential areas.
 The western segment connects Brooklandville and Towson via Riderwood.
 The eastern segment serves parts of Perry Hall and White Marsh.
Route 15 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs.
 The line currently runs from Security Square Mall, Westview Mall, Windsor Hills, or Walbrook Junction (all in West Baltimore or Baltimore County) through downtown Baltimore and northeast to Overlea, with selected peak hour express trips to Perry Hall.
 The main roads on which it operates include Security Boulevard, Windsor Mill Road, Forest Park Avenue, Poplar Grove Street, Edmondson Avenue, Saratoga Street, Gay Street, and Belair Road, and is one of the most heavily used bus routes operated by the MTA.
Route 20 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs.
 The line currently runs from Security Square Mall east through downtown Baltimore to Baltimore City Hall.
 The main roads on which the line operates are Old Frederick Road, Baltimore Street, Fayette Street, and Boston Street.
 The line serves the communities of Westview, Edmondson Village.
Route 57 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs.
 The line currently runs from the Rogers Avenue Metro Subway Station in Northwest Baltimore to Security Square Mall, with selected trips to the Social Security Administration headquarters in Woodlawn.
 The line serves the corridor of Gwynn Oak Avenue and the communities of Howard Park, Gwynn Oak, and Windsor Mill.