Question: Raymond Albert Patterson, Jr., was general manager of the NBA's Houston Rockets from 1972 to which year, among his most notable player acquisitions was Hakeem Abdul Olajuwon, a Nigerian-American former professional basketball player?

full_context: Document 1: Robert Parish: Robert Parish (born August 30, 1953) is an American retired basketball center. He was known for his strong defense, his high arcing jump shooting, and his clutch rebounding late in games. Robert Parish was elected to the Basketball Hall of Fame in 2003. In 1996, Parish was also named as one of the 50 Greatest Players in NBA History. His nickname was The Chief, after the fictitious Chief Bromden, a silent, giant Native American character in the film "One Flew Over the Cuckoo's Nest". According to Parish, former Celtics forward Cedric Maxwell gave him this nickname because of his stoic nature. He played an NBA-record 1,611 regular season games in his career.
Document 2: Yao Ming: Yao Ming (; born September 12, 1980) is a retired Chinese professional basketball player who played for the Shanghai Sharks of the Chinese Basketball Association (CBA) and the Houston Rockets of the National Basketball Association (NBA). He was selected to start for the Western Conference in the NBA All-Star Game eight times, and was named to the All-NBA Team five times. At the time of his final season, he was the tallest active player in the NBA, at 2.29 m . He is the only player outside of the United States to lead the NBA in All-Star voting.
Document 3: 1994–95 Houston Rockets season: The 1994–95 NBA season was the Rockets' 28th season in the National Basketball Association, and 24th season in Houston. After winning their first championship, the Rockets went on to win their first nine games of the season. However, with increased competition in the West, management felt a change was needed to win another title. On February 14, the Rockets traded Otis Thorpe to the Portland Trail Blazers for All-Star guard Clyde Drexler, a former teammate of Hakeem Olajuwon at the University of Houston. However, after the trade, the Rockets struggled in the second half of the season posting a record of 17–18 on their way to finishing third in the Midwest Division with a 47–35 record. Olajuwon was selected for the 1995 NBA All-Star Game.
Document 4: Houston Rockets all-time roster: The Houston Rockets are an American professional basketball team based in Houston, Texas. The team plays in the Southwest Division of the Western Conference in National Basketball Association (NBA). The team was established in 1967, and played in San Diego, California for four years before being moved to Houston. In the Rockets debut season, they won only 15 games. However, after drafting Elvin Hayes first overall in the 1969 NBA Draft, they made their first appearance in the playoffs in 1969. After Hayes was traded, Moses Malone was acquired to replace him. Malone won two MVPs during his time in Houston, and he led the Rockets to the conference finals in his first year with the team. He also took the Rockets to the NBA Finals in 1981, but they were defeated in six games by the Boston Celtics. In 1984, the Rockets drafted Hakeem Olajuwon, who led them to the 1986 Finals in his second year, where they lost again to Boston. In the next seven seasons, they lost in the first round of the playoffs five times. They won their first NBA championship in 1994, led by Olajuwon, who won Finals MVP. They repeated as champions the next year, and Olajuwon won Finals MVP once again. To date, the Rockets have not advanced to the finals again. The Rockets missed the playoffs from 1999–2003, and did not make the playoffs again until after they drafted Yao Ming in 2002. Since then, the Rockets have had a winning season in all but two of the next 14 seasons and, led by James Harden, advanced to the conference finals in 2015.
Document 5: Shaquille O'Neal: Shaquille Rashaun O'Neal ( ; born March 6, 1972), nicknamed "Shaq" ( ), is an American retired professional basketball player and rapper, currently serving as a sports analyst on the television program "Inside the NBA". Listed at 7 ft tall and weighing 325 lb , he was one of the heaviest players ever to play in the NBA, where he played for six teams throughout his 19-year career.
Document 6: Dominique Wilkins: Jacques Dominique Wilkins (born January 12, 1960) is an American retired professional basketball player who primarily played for the Atlanta Hawks of the National Basketball Association (NBA). Wilkins was a nine-time NBA All-Star, and is widely viewed as one of the best dunkers in NBA history, earning the nickname The Human Highlight Film. In 2006, Wilkins was inducted into the Naismith Memorial Basketball Hall of Fame.
Document 7: Clyde Drexler: Clyde Austin "The Glide" Drexler (born June 22, 1962) is an American retired professional basketball swingman. During his career, he was a ten-time All-Star, and named one of the 50 Greatest Players in NBA History. Drexler won an Olympic gold medal in 1992 as part of the 1992 United States men's Olympic basketball team ("The Dream Team") and an NBA Championship in 1995 with the Houston Rockets. He is a two-time Naismith Memorial Basketball Hall of Fame inductee (being inducted 2004 for his individual career, and in 2010 as a member of the "Dream Team") He currently serves as a color commentator for Houston Rockets home games.
Document 8: List of Houston Rockets head coaches: The Houston Rockets are an American professional basketball team based in Houston, Texas. They are a member of the Southwest Division of the Western Conference in the National Basketball Association (NBA). They have played their home games at Toyota Center since 2003. Founded by Robert Breitbard in San Diego, the team first joined the NBA in 1967 as an expansion team. After four losing seasons, however, the team was sold to a group of investors based in Houston. The group subsequently relocated the team to Houston, where the Rockets have remained for 37 seasons. The franchise won its only two NBA titles in 1994 and 1995.
Document 9: Ruben Patterson: Ruben Nathaniel Patterson (born July 31, 1975) is an American former professional basketball player. During his career, he played as a small forward and shooting guard. During his college career at the University of Cincinnati, Patterson earned third-team All-American honors and helped lead the Bearcats to Conference USA titles in both of his seasons there. Drafted by the Los Angeles Lakers in 1998, Patterson began his career with the Greek team AEK Athens BC before joining the Lakers in his rookie season. Later, he played for the NBA teams Seattle SuperSonics, Portland Trail Blazers, Denver Nuggets, Milwaukee Bucks, and Los Angeles Clippers before ending his career with the Lebanese team Champville SC.
Document 10: Hakeem Olajuwon: Hakeem Abdul Olajuwon ( ; ] ; born January 21, 1963), formerly known as Akeem Olajuwon, is a Nigerian-American former professional basketball player. From 1984 to 2002, he played the center position in the National Basketball Association (NBA) for the Houston Rockets and the Toronto Raptors. He led the Rockets to back-to-back NBA championships in 1994 and 1995. In 2008, he was inducted into the Basketball Hall of Fame, and in 2016, he was inducted into the FIBA Hall of Fame. Listed at 7 ft 0 in (2.13 m) (but standing closer to 6 ft 10 in (2.08 m) by his own admission), Olajuwon is considered one of the greatest centers ever to play the game. He was nicknamed "The Dream" during his basketball career after he dunked so effortlessly that his college coach said it "looked like a dream."
Document 11: Dennis Rodman: Dennis Keith Rodman (born May 13, 1961) is an American retired professional basketball player, who played for the Detroit Pistons, San Antonio Spurs, Chicago Bulls, Los Angeles Lakers, and Dallas Mavericks in the National Basketball Association (NBA). He was nicknamed "The Worm" and was known for his fierce defensive and rebounding abilities.
Document 12: Ralph Sampson: Ralph Lee Sampson Jr. (born July 7, 1960) is an American retired basketball player. A 7-foot-4 phenom, three-time College Player of the Year, and first selection in the 1983 NBA draft, Sampson brought heavy expectations with him to the National Basketball Association (NBA). The NBA Rookie of the Year, Sampson averaged 20.7 points and 10.9 rebounds for his first three seasons with the Houston Rockets before injuries began to take their toll. Three knee surgeries later he retired as a four-time All-Star, an NBA Rookie of the Year, and an NBA All-Star Game MVP (). One of his many career highlights was a buzzer-beating shot to dethrone the Los Angeles Lakers as Western Conference champions in 1986, derailing their hopes for coveted back-to-back NBA titles, and sending the Rockets to their second NBA Finals in the team's history.
Document 13: Colin Patterson (ice hockey): Colin Alexander Patterson (born May 11, 1960) is a Canadian former professional ice hockey player who played ten seasons in the National Hockey League (NHL). An undrafted player, he signed as a free agent with the Calgary Flames in 1983 after three seasons of college hockey with the Clarkson Golden Knights. A defensive specialist, Patterson played eight years with the Flames and was a member of their 1989 Stanley Cup championship team. After missing virtually the entire 1990–91 NHL season due to a knee injury, Patterson returned to the NHL for two seasons as a member of the Buffalo Sabres. He retired in 1994 after playing one season in Slovenia for HK Olimpija Ljubljana.
Document 14: George Patterson (basketball): George Patterson (November 26, 1939 – December 22, 2003) was an American basketball player who played in the National Basketball Association. Patterson was originally drafted in the twelfth round of the 1961 NBA draft by the Cincinnati Royals. He would finally play in the NBA with the Detroit Pistons from 1967 to 1968. Later, he was selected by the Milwaukee Bucks in the 1968 NBA Expansion Draft.
Document 15: Ray Patterson (basketball): Raymond Albert Patterson, Jr. (January 15, 1922 – August 3, 2011) was general manager of the NBA's Houston Rockets from 1972 to 1990. He was named NBA Executive of the Year in 1977, and his Rockets appeared in the NBA Finals in 1981 and 1986. Among his most notable player acquisitions were Ralph Sampson in 1983 and Hakeem Olajuwon in 1984. He left the Rockets in 1990 with hopes of becoming co-owner of an NHL team in Houston, and was succeeded by his son, Steve. Ray Patterson's NHL dreams never materialized, but he helped found an International Hockey League franchise, the Houston Aeros, in 1994.
ground_truth: 1990