Question: What kinds of sports are held in the Prudential Center?

Context paragraphs:
The Shops at Prudential Center: The Shops at Prudential Center is an urban shopping center located at the base of the Prudential Tower in Boston, Massachusetts.  The mall lies adjacent to many other destinations such as: Hynes Convention Center, the 101/111 Huntington Avenue office towers, and a skywalk connecting it to Copley Place.

Prudential Tower: The Prudential Tower, also known as the Prudential Building or, colloquially, The Pru, is an International Style skyscraper in Boston, Massachusetts.  The building, a part of the Prudential Center complex, currently stands as the 2nd-tallest building in Boston, behind 200 Clarendon Street.  The Prudential Tower was designed by Charles Luckman and Associates for Prudential Insurance.  Completed in 1964, the building is 749 ft tall, with 52 floors.  It contains 1200000 sqft of commercial and retail space.  Including its radio mast, the tower stands as the tallest building in Boston and is tied with others as the 77th-tallest in the United States, rising to 907 ft in height.

Mechanics Hall (Boston, Massachusetts): Mechanics Hall (Boston, Massachusetts) was a building and community institution on Huntington Avenue at West Newton Street, from 1881 to 1959.  Commissioned by the Massachusetts Charitable Mechanic Association, it was built by the noted architect William Gibbons Preston.  The building was located between the Boston and Albany railroad yards and Huntington avenue.  It was razed for the Prudential Center urban renewal project of the early 1960s.  The site is on the north side of Huntington Avenue, and since 1941 has been served by Prudential Station ("nee" Mechanics Hall Station) of the MBTA Green Line "E" Branch.

Grant USA Tower: The Grant USA Tower was a proposed 121-story skyscraper planned for Newark, New Jersey by developer Harry Grant.  Harry Grant was an Israeli-born developer who was based out of New Jersey, and who financed the gold dome on top of Newark City Hall, and also started the never-completed Renaissance Mall in the city.  Grant Tower was to be located over the old Central Railroad Terminal, near Broad and Lafayette Street.  In 2007, the incomplete Renaissance Mall was torn down to build the Prudential Center.  The old and unused part of the train station below, which was to serve as the foundation of the tower, remains in place.  There are currently plans to connect the old portion of the train station with the Prudential Center, with the idea of turning it into a museum.  There were plans for a 21-floor atrium above the 121st floor, which would have been the top floor of the hotel.  Had it been completed as planned by 1986, it would have contained the tallest hotel, and would have been the tallest building and the tallest structure at the time.

111 Huntington Avenue: 111 Huntington Avenue is a Boston skyscraper.  Located on Huntington Avenue, it is part of the Prudential Center complex that also houses the Prudential Tower.  Completed in 2002, the tower is 554 feet (169 meters) tall and houses 36 floors.  It is Boston's ninth-tallest building.  It won the 2002 bronze Emporis Skyscraper Award.  It is sometimes given the unofficial nickname The R2-D2 Building after the "Star Wars" droid's top.

Prudential (MBTA station): Prudential is an underground light rail station on the MBTA Green Line "E" branch, located below Huntington Avenue next to the Prudential Tower complex near Belvidere Street in Boston, Massachusetts.  Prudential station is fully handicapped accessible, featuring low raised platforms and elevator service to the Huntington Arcade of the Shops at Prudential Center at the base of the Prudential Tower.

Sports in Newark, New Jersey: Sports in Newark, New Jersey, the second largest city in New York metropolitan area, are part of the regional professional sports and media markets.  The city has hosted many teams and events, though much of its history is without an MLB, NBA, NHL, or NFL team in the city proper.  Two venues in the northeastern New Jersey metro region, Prudential Center and Riverfront Stadium, are in Downtown Newark.  Red Bull Arena is just across the Passaic River in Harrison.  The Meadowlands Sports Complex is less than 10 miles away from Downtown and reached with the Meadowlands Rail Line via Newark Penn Station or Broad Street Station.

Prudential Headquarters: Prudential Financial, as it is known today, began as The Widows and Orphans Friendly Society in 1875.  For a short time it was called the Prudential Friendly Society, and for many years after 1877 it was known as the Prudential Insurance Company of America, a name still widely in use.  Based in Newark, New Jersey, the company has constructed a number of buildings to house its headquarters downtown in the Four Corners district.  In addition to its own offices, the corporation has financed large projects in the city, including Gateway Center and Prudential Center.  Prudential has about 5,200 employees in the city.

UFC 169: UFC 169: Barão vs. Faber II was a mixed martial arts event held on February 1, 2014, at the Prudential Center in Newark, New Jersey.

Prudential Center: Prudential Center is a multi-purpose indoor arena in the central business district of Newark, New Jersey, United States.  It was designed by HOK Sport (now Populous), with the exterior designed by Morris Adjmi Architects.  Opened in 2007, it is the home of the New Jersey Devils of the National Hockey League (NHL) and the Seton Hall Pirates men's basketball team from Seton Hall University.  The arena seats 16,514 patrons for hockey and 18,711 for basketball.  Fans and sports writers have affectionately nicknamed the arena "The Rock" in reference to the Rock of Gibraltar, the corporate logo of Prudential Financial, a financial institution that owns the naming rights to the arena and is headquartered within walking distance of it.  In December 2013, the arena ranked third nationally and ninth internationally for self-reported annual revenue.

Supporting paragraphs: UFC 169 Prudential Center
Answer: mixed martial arts