Question: In what city does and airline with more than $1 billion in annual revenue have its headquarters?

Context paragraphs:
Major airlines of the United States: The United States Department of Transportation defines a major carrier or major airline carrier as a U.S.-based airline that posts more than $1 billion in revenue during a fiscal year.  The term "major carrier" or "major airline" can also refer to traditional legacy carriers, distinguishing them from startup and low-cost carriers.

Vinamilk: Vinamilk is the largest dairy company in Vietnam.  Based on the UNDP 2007 Top 200 largest firms in Vietnam report, it is also the 15th largest company in Vietnam.  In 2010, it is the first company in Vietnam to be included in the Forbes Asia's 200 Best Under A Billion list that highlights 200 top-performing small- and mid-sized companies with annual revenue under US$1 billion.

Largest projects in the Philippine economy: The largest projects in the Philippine Economy includes both megaprojects, costing over $1 billion, and other large investment projects, typically costing between $10 million and $1 billion.  Projects with investments below $10 million also may be included here, either as parts of larger projects, or in case of major international significance and media coverage.  In case of projects involving new vehicle models, the cost of development is taken into account as well as the cost of production.

Delta Air Lines: Delta Air Lines, Inc. ("Delta"; ) is a major American airline, with its headquarters and largest hub at Hartsfield–Jackson Atlanta International Airport in Atlanta, Georgia.  The airline along with its subsidiaries and regional affiliates operate over 5,400 flights daily and serve an extensive domestic and international network that includes 319 destinations in 54 countries on six continents, as of October 2016.  Delta is one of the four founding members of the SkyTeam airline alliance, and operates joint ventures with Air France-KLM, Alitalia, Korean Air, China Eastern Airlines, Virgin Atlantic, and Virgin Australia.  Regional service is operated under the brand name Delta Connection.

Marijuana Control, Regulation, and Education Act: The Marijuana Control, Regulation, and Education Act, also known as California Assembly Bill 390 (A.B. 390) and later Assembly Bill 2254 (A.B. 2254), is the first bill ever introduced to regulate the sale and use of marijuana in the U.S. state of California.  If passed and signed into law, marijuana would be sold and taxed openly to adults age 21 and older in California.  Tom Ammiano, a Democrat representing California's 13th State Assembly district, introduced this piece of legislation on February 23, 2009, arguing that the bill will "tax and regulate marijuana in a manner similar to alcohol."  As introduced, this proposal is estimated to raise over $1 billion in annual revenue by taxing the retail production and sale of marijuana for adults 21 years of age and older.  To obtain a commercial grow license one would pay an initial $5,000 fee, then a $2,500 fee each year after that.  A tariff of $50 per ounce would also be placed on all sold and grown marijuana.  The bill has gained much media attention, statewide and nationally.

Brisk (beverage): Brisk is a tea and juice brand managed by the Pepsi Lipton Partnership, created by John Brisk, in 1991 between PepsiCo and Unilever.  In 2012, PepsiCo announced Brisk had surpassed $1 billion in annual revenue, making it one of the 22 billion-dollar PepsiCo brands.

Justin Waldron: Justin Waldron (June 18, 1988) is an American internet entrepreneur best known as the co-founder of Zynga, which makes online social and mobile games.  Zynga is considered to be the pioneer of the social and mobile gaming industries, responsible for creating many of the microtransaction and viral marketing business models which are now ubiquitous.  Within four years of its founding, Zynga grew to $1 billion in annual revenue, faster than any other internet company.  In 2011 Zynga held the largest IPO since Google, with a valuation of over $10 billion.  Waldron left Zynga in October 2013 and is currently an active angel investor and advisor in various other technology companies.

Tourism in Jordan: Tourism is one of the most important sectors in Jordan's economy.  In 2010, over 8 million tourists from various countries visited Jordan, with tourist receipts amounting to about 3.5 billion dollars.  An additional $1 billion was earned through medical tourism to the kingdom.  In 2011, Jordanian tourism lost $1 billion due to the political instability across the region.

Midwest Federal Savings &amp; Loan: Midwest Federal Savings and Loan was an American bank headquartered in Minneapolis, Minnesota.  Starting in the mid-1960s, its headquarters were located at 801 Nicollet Mall in what is now called McGladrey Plaza.  Midwest Federal was in business for ninety-nine years until its failure in 1989.  Its collapse was due mostly to bad real estate loans.  On April 22, 1991 the "St. Paul Pioneer Press" called the bank's failure the "largest financial disaster in Minnesota history" and was part of the savings and loan crisis of the 1980s.  Midwest Federal had assets of $3.5 billion, was liquidated by the Government at a cost of $1 billion to taxpayers.  Midwest was $1 billion in debt when it was seized by regulators in February 1989.

Arthur Child: Arthur James Edward Child, {'1': ", '2': ", '3': ", '4': "} (May 19, 1910 – July 30, 1996) was a Canadian businessman and former chairman and chief executive officer of Burns Foods Limited of Calgary.  Arthur James Edward Child and his business partner Ron Jackson acquired the food processing and distribution company in a leveraged management buyout in 1986.  With sales in excess of $1 billion, Burns Foods was involved in meat processing, dairy, food warehousing and distribution, and vegetable processing businesses.  Over a 12-year period, Arthur James Edward Child and his management team built Burns Foods into a leading Canadian food company with over $1 billion in annual sales.  Beginning in 1995, a majority of the Burns Foods’ subsidiaries were sold generating an exceptional return to the shareholders.

Supporting paragraphs: Delta Air Lines Major airlines of the United States
Answer: Atlanta