Question: Corporal Stephen J. Ballard was killed after approaching a vehicle at what convenience store whose corporate headquarters is located in Greater Philadelphia?

Context paragraphs:
All Day Convenience Store: All Day Convenience Store is a convenience store division of All Value Holdings Inc., a subsidiary of MBV Group of Companies owned by a Filipino Entrepreneur and a former Philippine Senator, Manny Villar.  All Day Convenience Store was the former Finds Convenience Store Inc., an experimental business of Villar which was established in 2008 with an initial of 40 branches in Metro Manila.

Kum &amp; Go: Kum & Go is a convenience store chain primarily located in the Midwestern United States.  The company, based in West Des Moines, Iowa, operates over 400 stores in 11 states—primarily in its home state of Iowa.  Other states include: Missouri, Arkansas, Oklahoma, Nebraska, South Dakota, Minnesota, Montana, Colorado, and Wyoming.  Kum & Go was ranked as the 23rd-largest convenience store chain in the United States by "Convenience Store News" in 2010.

VPS Convenience: VPS Convenience Store Group was an American convenience store chain headquartered in Wilmington, North Carolina that could trace its roots to the founding of the first Village Pantry convenience store in 1966.  VPS was sold in two parts in 2013 and 2015 to GPM Investments.

Jewish Relief Agency: The Jewish Relief Agency (JRA) is a charitable organization, a project of Lubavitch House in Philadelphia (but an independent 501(c)(3) nonprofit organization), whose aim is to identify and feed needy Jewish clients in the Greater Philadelphia region.  Almost 57,000 Jews, representing nearly a quarter of the Jewish population in the five counties of Greater Philadelphia, live in poor or lower-income households.  Many of these disadvantaged Jews are immigrants from the former Soviet Union, whose difficulties with learning English and unfamiliarity with the established agency structure have left them outside the existing network of Jewish aid.

Shooting of Stephen Ballard: Corporal Stephen J. Ballard (1985 – 26 April 2017) was a Delaware State Police Officer.  On 26 April 2017 Cpl. Ballard was shot and killed after approaching a suspicious vehicle at a Wawa in Bear, Delaware.  Ballard was the first Delaware state police officer to be killed on duty since 1972.

Carrefour Express: Carrefour Express (stylized as Carrefour express) is a convenience store chain owned and operated by French retailer Carrefour with locations in three continents.  Carrefour Express was created in 2007 to consolidate all convenience stores owned by Carrefour worldwide under one name.  In 2010, all convenience store operations in France, including Marché, Champion and Shopi were rebranded as Express.

Holiday Stationstores: Holiday Stationstores is a chain of gasoline and convenience stores in the United States.  It is the 18th largest convenience store chain in the United States, with over 500 locations in 10 states.  Stationstores are located in Alaska, Idaho, Michigan, Minnesota, Montana, North Dakota, South Dakota, Washington, Wisconsin and Wyoming.  It is based in Bloomington, Minnesota.  It also ranked 133rd on "Forbes"<nowiki>'</nowiki> list of America's largest private companies.  In July 2017, it was acquired by Montreal-based convenience store operator Alimentation Couche-Tard.

Wawa Inc.: Wawa Inc. is a chain of convenience store/gas stations located along the East Coast of the United States.  It operates in Pennsylvania, New Jersey, Delaware, Maryland, Virginia, and Florida.  The company's corporate headquarters is located in the Wawa area of Chester Heights, Pennsylvania in Greater Philadelphia.  s of 2008 , Wawa was the largest convenience store chain in Greater Philadelphia, and it is also the third-largest retailer of food in Greater Philadelphia, after ACME Markets and ShopRite.

International Plaza (Pennsylvania): International Plaza, formerly known as Scott Plaza, is an office complex in Tinicum Township, Delaware County, Pennsylvania, in Greater Philadelphia.  It is the former corporate headquarters of the Scott Paper Company.  The facility is adjacent to the Philadelphia International Airport and south of Pennsylvania Route 291.

Corporate headquarters: Corporate headquarters is the part of a corporate structure that deals with important tasks such as strategic planning, corporate communications, taxes, law, marketing, finance, human resources, and information technology.  Corporate headquarters takes responsibility for the overall success of the corporation and ensures corporate governance.  It is sometimes referred to as the head office, which is the location where the executives of a business work and where many of the key business decisions are made.  Generally, corporate headquarters acts as a core when the business is operating.  The corporate headquarters includes: the CEO (chief executive officer) as a key person and their support staff such as the CEO office and other CEO related functions; the "corporate policy making" functions: Include all corporate functions necessary to steer the firm by defining and establishing corporate policies; the corporate services: Activities that combine or consolidate certain enterprise-wide needed support services, provided based on specialized knowledge, best practices, and technology to serve internal (and sometimes external) customers and business partners; the interface: Reporting line and bi-directional link between corporate headquarters and business units.  Most other divisions and branches report to the corporate headquarters and staff may visit there periodically for training or other instructions" (Kimberly: 2014: 22).  The corporate services are often relocated into a separate legal entity called shared services center.  Research shows that the city in which a company is headquartered has a significant influence on the company's activities, including its business practices and its corporate philanthropic giving.

Supporting paragraphs: Shooting of Stephen Ballard Wawa Inc.
Answer: Wawa Inc.