Utilize the input text as a context reference, choose the right relationship between MasterCard and purchase from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

And while you might be tempted to purchase a generic gift card from a payment network like Visa, MasterCard or American Express, be aware that these cards can carry a fee that will reduce or eliminate any bonus cash back you were hoping to earn.

Answer: headquarters_location