Question: In what city is both the Aon Center and the Trump Tower located in?
Context: The John Hancock Center is a 100-story, 1,128-foot (343.7 m) supertall skyscraper at 875 North Michigan Avenue, Chicago, Illinois, United States.  It was constructed under the supervision of Skidmore, Owings and Merrill, with chief designer Bruce Graham and structural engineer Fazlur Khan.  When the building topped out on May 6, 1968, it was the second tallest building in the world and the tallest outside of New York City.  It is currently the fourth-tallest building in Chicago and the eighth-tallest in the United States, after One World Trade Center, the Willis Tower, 432 Park Avenue, the Trump Tower Chicago, the Empire State Building, the Bank of America Tower, and the Aon Center.  When measured to the top of its antenna masts, it stands at 1500 ft .  The building is home to offices and restaurants, as well as about 700 condominiums, and contains the third highest residence in the world, after the Burj Khalifa in Dubai and the Trump Tower in Chicago.  The building was named for John Hancock Mutual Life Insurance Company, a developer and original tenant of the building. Trump Tower Manila, also known as Trump Tower at Century City, is a residential building located in Makati, Metro Manila, Philippines.  The Trump Tower Manila showroom opened in early 2012, although the company has said that unit reservations started in September 2011.  Groundbreaking of the building began in June 2012, with a scheduled opening in November 2017.  Construction was nearly finished as of November 2016.  The $150 million tower will stand 57 stories high upon completion.  The building will be located at the Century City mixed-use complex in Makati Poblacion and would be one of the tallest buildings in the Philippines. Chicago, the third-largest city in the United States, is home to 1,315 completed high-rises, 44 of which stand taller than 600 ft .  The tallest building in the city is the 108–story Willis Tower (formerly the Sears Tower), which rises 1451 ft in the Chicago Loop and was completed in 1974.  Sears Tower was the tallest building in the world from its completion, and remained the tallest building in the United States until May 10, 2013 when it was overtaken by One World Trade Center in New York City.  The second-, third- and fourth-tallest buildings in Chicago are the Trump International Hotel & Tower, the Aon Center and the John Hancock Center, respectively.  Of the ten tallest buildings in the United States, four are located in Chicago.  s of 2013 , the entire city had 105 buildings at least 500 ft tall. WDRV (97.1 FM, "The Drive") is a commercial FM radio station licensed to serve Chicago, Illinois.  The station is owned by Hubbard Radio and broadcasts a classic rock format.  Its studios are located in the John Hancock Center and its broadcast tower is located atop the Aon Center at ( ).  The station's programming is simulcast on sister station WWDV. The Trump International Hotel and Tower Vancouver is a skyscraper in Downtown Vancouver, British Columbia, Canada.  The 63-storey, 187.8 m , mixed-use tower is located at 1151 West Georgia Street, and was completed in 2016.  The Trump Tower is the second tallest building in the city, after the Shangri-La tower located across West Georgia Street. The Trump International Hotel and Tower, also known as Trump Tower Chicago and Trump Tower, is a skyscraper condo-hotel in downtown Chicago, Illinois.  The building, named after businessman and 45th U.S. President Donald Trump, was designed by architect Adrian Smith of Skidmore, Owings and Merrill.  Bovis Lend Lease built the 98-story structure, which reaches a height of 423.2 m including its spire, its roof topping out at 1171 ft .  It is next to the main branch of the Chicago River, with a view of the entry to Lake Michigan beyond a series of bridges over the river.  The building received publicity when the winner of the first season of "The Apprentice" reality television show, Bill Rancic, chose to manage the construction of the tower over managing a new Trump National Golf Course and resort in Los Angeles. Aon Center is a 62-story, 860 ft Modernist office skyscraper at 707 Wilshire Boulevard in downtown Los Angeles, California.  Site excavation started in late 1970, and the tower was completed in 1973.  Designed by Charles Luckman, the rectangular bronze-clad building with white trim is remarkably slender for a skyscraper in a seismically active area.  It is the third tallest building in Los Angeles, the third tallest in California, and the 39th tallest in the United States.  The logo of the Aon Corporation, its anchor tenant, is displayed at the top in red. Trump Tower is a 58-story, 664 ft mixed-use skyscraper located at 721–725 Fifth Avenue between 56th and 57th Streets in Midtown Manhattan, New York City.  Trump Tower serves as the headquarters for The Trump Organization.  Additionally, it houses the penthouse condominium residences of the building's namesake and developer, U.S. President Donald Trump, who was a businessman and real estate developer when the tower was developed.  Several members of the Trump family also reside, or have resided, in the building.  The tower stands upon a plot where the flagship store of department-store chain Bonwit Teller was formerly located. The Aon Center (200 East Randolph Street, formerly Amoco Building) is a modern supertall skyscraper in the Chicago Loop, Chicago, Illinois, United States, designed by architect firms Edward Durell Stone and The Perkins and Will partnership, and completed in 1974 as the Standard Oil Building.  With 83 floors and a height of 1,136 feet (346 m), it is the third tallest building in Chicago, surpassed in height by the Willis Tower and the Trump International Hotel and Tower.  The building is managed by Jones Lang LaSalle, which is also headquartered in the building.  Aon Center formerly had the headquarters of Aon and Amoco; Aon's US operations are still headquartered here. The First Interstate Tower fire was a high-rise fire that occurred on May 4, 1988, at the First Interstate Tower (now Aon Center) in Los Angeles, California.  The fire destroyed five floors of the building, injured 40 people, and caused the death of a maintenance worker, when the elevator the worker was riding opened onto the burning 12th floor.
Answer: Chicago, Illinois