Question: During what season did an American professional basketball team based in Washington, D.C acquired Elvin Hayes from the Houston Rockets?

full_context: Document 1: 1992–93 Washington Bullets season: The 1992–93 NBA season was the Bullets' 32nd season in the National Basketball Association. A year after being named Most Improved Player, Pervis Ellison who had a history of injuries played only 49 games. The Bullets struggled after a 7–10 start losing nine consecutive games in December. They lost their final five games of the season, finishing last place in the Atlantic Division with a 22–60 record. Top draft pick Tom Gugliotta made the All-Rookie First Team averaging 14.7 points and 9.6 rebounds per game. On March 19, 1993 against the Chicago Bulls, second-year guard LaBradford Smith scored a career high of 37 points against Michael Jordan. However, the Bullets lost to the Bulls 104–99. Following the season, Harvey Grant was traded to the Portland Trail Blazers, and Charles Jones was released, where he would sign as a free agent with the Detroit Pistons during the next season.
Document 2: 1972–73 Baltimore Bullets season: During the 1972–73 NBA season, the Bullets acquired Elvin Hayes from the Houston Rockets. In the draft, the Bullets acquired Kevin Porter. After a slow start, the Bullets had a strong December by posting a 10–4 record.
Document 3: List of Washington Nationals seasons: 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.
Document 4: 1995–96 Washington Bullets season: The 1995–96 NBA season was the Bullets' 35th season in the National Basketball Association. During the offseason, the Bullets acquired All-Star guard Mark Price from the Cleveland Cavaliers, and Robert Pack from the Denver Nuggets, while signing unrestricted free agent Tim Legler. In his second season, Juwan Howard emerged as a star on the court and in the community, averaging 22.1 points per game while being selected to the 1996 NBA All-Star Game. However, Injuries would be an issue as his teammate Chris Webber would be limited to 15 games following the lingering effect to his injured shoulder. Meanwhile, Price only appeared in just seven games due to a sore left heel, and Pack who played in 31 games was out with nerve damage in his right leg.
Document 5: Washington Valor: The Washington Valor are a professional arena football team based in Washington, D.C. that began play in the Arena Football League (AFL) in 2017. The team's home arena is the Capital One Arena. The Valor is owned by Monument Sports and Entertainment (Ted Leonsis, chairman), which also owns the Washington Wizards of the National Basketball Association (NBA), Washington Mystics of the Women's National Basketball Association (WNBA), Washington Capitals of the National Hockey League (NHL) and the new Baltimore Brigade franchise.
Document 6: 1994–95 Washington Bullets season: The 1994–95 NBA season was the Bullets' 34th season in the National Basketball Association. During the offseason, the Bullets acquired Scott Skiles from the Orlando Magic and hired Jim Lynam as head coach. After drafting Juwan Howard with the fifth pick in the 1994 NBA draft, the Bullets traded Tom Gugliotta to the Golden State Warriors for Howard's former "Fab Five" teammate at Michigan Chris Webber. However, after a 4–1 start to the season, the Bullets struggled as they lost 25 of their next 28 games. At midseason, things got worse as Kevin Duckworth was suspended indefinitely after 40 games for not staying in physical condition, where he weighed over 310lbs. The Bullets posted a 13-game losing streak near the end of the season, and finished last place in the Atlantic Division with a 21–61 record. Webber averaged 20.1 points, 9.6 rebounds and 1.6 blocks per game.
Document 7: 1976–77 Buffalo Braves season: The 1976–77 NBA season was the Braves seventh season in the NBA. The Braves were purchased by John Y. Brown, Jr., the former owner of the Kentucky Colonels in the now defunct American Basketball Association for $6.2 million. As part of an agreement with the Braves' former owner, Paul Snyder, Brown would give Snyder money received in player deals to reduce the purchase price. The sell-off began shortly after the season, as the Braves sold newly acquired Moses Malone. Malone was acquired in a trade with the Portland Trail Blazers after the ABA dispersal draft. Malone was now off to the Houston Rockets. The selling of players continued into the season as Bob McAdoo was sold to the New York Knicks. While the deals helped Brown pay virtually nothing for the franchise, it turned a promising franchise into a rebuilding one. Attendance fell off as the Braves finished in 4th place with a 30-52 record. The only spotlight was rookie Adrian Dantley, who captured Rookie of the Year honors with 20.3 points per game. However Dantley himself was traded following the season to the Indiana Pacers for Billy Knight.
Document 8: Sports in Washington, D.C.: 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.
Document 9: 1973 NBA draft: The 1973 NBA draft was the 27th annual draft of the National Basketball Association (NBA). The draft was held on April 24 and May 5, 1973, before the 1973–74 season. In this draft, 17 NBA teams took turns selecting amateur U.S. college basketball players and other eligible players, including international players. The first two picks in the draft belonged to the teams that finished last in each conference, with the order determined by a coin flip. The Philadelphia 76ers won the coin flip and were awarded the first overall pick, while the Portland Trail Blazers were awarded the second pick. The remaining first-round picks and the subsequent rounds were assigned to teams in reverse order of their win–loss record in the previous season. Prior to the draft, the Baltimore Bullets relocated to Landover, Maryland, and became the Capital Bullets. The Philadelphia 76ers were awarded an extra first-round draft pick as compensation when the Seattle SuperSonics signed John Brisker. A player who had finished his four-year college eligibility was eligible for selection. If a player left college early, he would not be eligible for selection until his college class graduated. Before the draft, 11 college underclassmen were declared eligible for selection under the "hardship" rule. These players had applied and gave evidence of financial hardship to the league, which granted them the right to start earning their living by starting their professional careers earlier. The draft consisted of 20 rounds comprising the selection of 211 players.
Document 10: Washington Wizards: The Washington Wizards are an American professional basketball team based in Washington, D.C. The Wizards compete in the National Basketball Association (NBA), as a member of the league's Eastern Conference Southeast Division. The team plays its home games at the Capital One Arena, in the Chinatown neighborhood of Washington, D.C.
Document 11: List of Washington Wizards head coaches: The Washington Wizards are an American professional basketball team based in Washington, D.C. They are a member of the Southeast Division of the Eastern Conference in the National Basketball Association (NBA). The team plays its home games at the Capital One Arena. The franchise was established in Chicago, Illinois as the Chicago Packers in 1961; after one season, its name was changed to the Chicago Zephyrs. In 1963, the franchise moved to Baltimore, Maryland and was renamed the Baltimore Bullets. It moved to Landover, Maryland in 1973 and changed its name to the Capital Bullets. After one season, the team became the Washington Bullets. In 1978, the Bullets won the 1978 NBA Finals in seven games for the franchise's only championship. In 1997, the team became the Washington Wizards, which is the team's current name. Since their formation, the Wizards have won six divisional championships, four conference championships, one league championship and have appeared in the playoffs twenty-three times.
Document 12: Washington Nationals: 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.
Document 13: 1991–92 Washington Bullets season: The 1991–92 NBA season was the Bullets' 31st season in the National Basketball Association. During the offseason, the Bullets re-acquired Michael Adams from the Denver Nuggets. However, Bernard King would miss the entire season with a right knee injury. To make matters worse, Hot Plate Williams was suspended for the entire season for not being able to control his weight. The Bullets endured prolonged losing streaks in almost every month, as they traded Tom Hammonds midway through the season to the Charlotte Hornets for Rex Chapman, who only played in the final game of the season due a strained plantar fascia (left heel) injury. The Bullets lost 15 of their final 18 games finishing sixth in the Atlantic Division with a 25–57 record.
Document 14: Washington NBA G League team: The Washington NBA G League team is an American professional basketball team in the NBA G League and an affiliate of the Washington Wizards of the National Basketball Association. Based in Washington, D.C., the team will play their home games during the 2018–19 season at the St. Elizabeths East Entertainment and Sports Arena. The team became the twenty-third G League team to be owned by an NBA team.
Document 15: Atlanta Hawks: The Atlanta Hawks are a professional basketball team based in Atlanta, Georgia. The Hawks compete in the National Basketball Association (NBA) as a member of the league's Eastern Conference Southeast Division. The team plays its home games at Philips Arena.
ground_truth: 1972–73 NBA season