Question: What is the name of the professional baseball team based in Washington DC which played at RFK Stadium and Nationals Park and for whom Melvin Dorta had his debut in 2006?

Context articles: Nationals Park
Washington Nationals
La Norte
2012 Washington Nationals season
Events DC
Melvin Dorta
Presidents Race
List of Washington Nationals seasons
Southeast, Washington, D.C.
Sports in Washington, D.C.

Nationals Park is a baseball park along the Anacostia River in the Navy Yard neighborhood of Washington, D.C. It is the home ballpark for the Washington Nationals, the city's Major League Baseball franchise.
 When the Nationals franchise relocated to Washington, D.C., they temporarily played at RFK Stadium until Nationals Park was completed.
 It is the first LEED-certified green major professional sports stadium in the United States.
The Washington Nationals are a professional baseball team based in Washington, D.C. The Nationals compete in Major League Baseball (MLB) as a member club of the National League (NL) East division.
 From 2005 to 2007, the team played in RFK Stadium; since 2008 their home stadium has been Nationals Park on South Capitol Street in Southeast D.C., near the Anacostia River.
La Norte (also La Curva Norte or The Northside) is a soccer supporters' club affiliated with Major League Soccer side D.C. United.
 The club was founded in 2001 when members of La Barra Brava left section 135 of RFK Stadium to form a new club.
 The club was originally situated in section 120 of RFK, as the section sat directly behind the north goal.
 The club takes its name from their preferred location on the north side of the stadium.
 La Norte were forced to change sections with the arrival of the Washington Nationals baseball franchise, and the subsequent reconfiguration of RFK's seating to accommodate a baseball diamond.
The Washington Nationals' 2012 season was the eighth season for the baseball franchise of Major League Baseball in the District of Columbia, the fifth season at Nationals Park, and the 44th since the original team was started in Montreal, Quebec.
 After finishing the previous season in third place with an 80–81 record, out of last place in the NL East for the second time since moving to Washington, the Nationals made several moves to pursue playoff contention in 2012 and beyond.
 Despite being plagued with injuries, the Nationals had an impressive start to the season, never dropping below the .500 mark and consistently holding first or second place in their division.
 On September 3, the Nationals won their 82nd game of the season, making this season their first winning season since moving to Washington, D.C. in 2005 and the first for the franchise since 2003.
 On September 20, the Nationals beat the Los Angeles Dodgers to clinch the franchise's first postseason berth since 1981, and the first for a Washington-based team since the Washington Senators won the American League pennant in 1933.
 On October 1, the Nationals clinched the National League East division.
 On October 3, they went on to clinch the best record in Major League Baseball at 98-64.
 They finished the season with a 98-64 record and played the St. Louis Cardinals in the Divisional Series.
 On October 12, in Game 5 of the NLDS, they lost to the Cardinals 9-7 and were eliminated.
Events DC is a quasi-public company in Washington, D.C. that owns and manages the Walter E. Washington Convention Center, RFK Stadium, and Nationals Park among other DC venues.
 Led by Greg O'Dell, the organization receives millions in taxpayer funding and is overseen by an independent board.
Melvin A. Dorta (born January 15, 1982 in Valencia, Venezuela) is a retired professional baseball infielder.
 Dorta bats and throws right-handed.
 He made his Major League Baseball debut with the Washington Nationals on July 21, 2006.
The Presidents Race is a promotional event held at every Washington Nationals home game at Nationals Park, and previously at RFK Stadium, in the middle of the fourth inning.
 The Presidents Race features likenesses of six former Presidents of the United States, four of whom are found on Mount Rushmore: George Washington, Abraham Lincoln, Thomas Jefferson, and Theodore Roosevelt, plus William Howard Taft, Calvin Coolidge (retired after 2015 season) and Herbert Hoover (retired after 2016 season).
 Their nicknames are George, Abe, Tom, Teddy, Bill, Calvin and Herbie.
 The Presidents are typically dressed in Nationals jerseys numbered according to their term as president (1 for George, 3 for Tom, 16 for Abe, 26 for Teddy, 27 for Bill, 30 for Calvin and 31 for Herbie) and topped with giant foam caricature heads.
 On Sundays, they usually wear period costumes, often referred to as their "Sunday Best" outfits.
 The most recent addition was that of Herbert Hoover on April 10, 2016.
The Washington Nationals are a professional baseball team that has been based in Washington, D.C. since .
 The Nationals are a member of both the Major League Baseball's (MLB) National League Eastern Division and the National League (NL) itself.
 Since the 2008 season, the Nationals have played in Nationals Park; from 2005 through , the team played in Robert F. Kennedy Memorial Stadium.
Southeast (SE or S.E.) is the southeastern quadrant of Washington, D.C., the capital of the United States, and is located south of East Capitol Street and east of South Capitol Street.
 It includes the Capitol Hill and Anacostia neighborhoods, the Navy Yard, the Joint Base Anacostia-Bolling (JBAB), the U.S. Marine Barracks, the Anacostia River waterfront, Eastern Market, the remains of several Civil War-era forts, historic St. Elizabeths Hospital, RFK Stadium, Nationals Park, and the Congressional Cemetery.
 It is also contains a landmark known as "The Big Chair," located on Martin Luther King Avenue.
 The quadrant is bisected by the Anacostia River, with the portion that is west of the river sometimes referred to as "Near Southeast".
Sports in the Washington, D.C. area include major league sports teams, popular college sports teams, and a variety of other team and individual sports.
 The Washington metro area is also home to several major sports venues including Capital One Arena, RFK Stadium, FedExField, and Nationals Park.
 Washington teams are widely known as some of the least successful in American sports, as no big four team has reached its sport's conference championship round since the 1998 Stanley Cup playoffs and no team has won a championship since the Redskins won Super Bowl XXVI.
 The area is also home to two regional sports television networks, Comcast SportsNet Mid-Atlantic, which is based in Bethesda, Maryland and Mid-Atlantic Sports Network.