Question: Who is the father of the player who signed as a free agent with the Spurs following the 2003–04 Seattle SuperSonics season?

Context paragraphs:
1971–72 Seattle SuperSonics season: The 1971–72 Seattle SuperSonics season was the 5th season of the Seattle SuperSonics in the National Basketball Association (NBA).  In their third season with Lenny Wilkens as head coach, the Sonics finished the regular season in sixth place in the Western Conference with a 47–35 record, their first winning record in franchise history.  Wilkens quit as head coach at the end of the season and was replaced by former Dallas Chaparrals coach Tom Nissalke.

1988–89 Seattle SuperSonics season: Following are the results of the 1988–89 Seattle SuperSonics season.  The 1988–89 NBA season was the Seattle SuperSonics' 22nd season in the National Basketball Association.

1974–75 Seattle SuperSonics season: The 1974–75 Seattle SuperSonics season was the 8th season of the Seattle SuperSonics in the National Basketball Association (NBA).  In their second season with Bill Russell as head coach and with rookies comprising half the roster, the SuperSonics finished the regular season in 4th place in the Western Conference with a 43–39 record and reached the playoffs for the first time in franchise history.  After defeating the Detroit Pistons in 3 games in the first round in a best-of-three series, the team fell to the future champions Golden State Warriors in six games.

2007–08 Seattle SuperSonics season: The 2007–08 Seattle SuperSonics season was the 41st season of the Seattle SuperSonics in the National Basketball Association (NBA) and the franchise's final season of play in Seattle before relocating to Oklahoma City to play as the Thunder.  With head coach P. J. Carlesimo as replacement of Bob Hill, who was fired at the end of the previous season, the SuperSonics finished in 15th place in the Western Conference with a franchise worst 20–62 record.  Seattle's first round draft pick and no. 2 overall Kevin Durant was chosen as the Rookie of the Year at the end of the season.

1970–71 Seattle SuperSonics season: The 1970–71 Seattle SuperSonics season was the Seattle SuperSonics 4th season in the National Basketball Association (NBA).  In their second season with Lenny Wilkens as head coach, the Sonics finished in 8th place in the Western Conference with a 38–44 record.  Trouble arose with the injury of top scorer Bob Rule, who tore his Achilles tendon three games into the season during a match against the Portland Trail Blazers and lost him for the remainder of the season.

Brent Barry: Brent Robert Barry (born December 31, 1971) is an American retired professional basketball player.  He is the son of former NBA player Rick Barry.  The 6 ft , 210 lb shooting guard played professionally in the National Basketball Association, winning two championships with the San Antonio Spurs.  He also won the 1996 NBA Slam Dunk Contest.

1975–76 Seattle SuperSonics season: The 1975–76 Seattle SuperSonics season was the 9th season of the Seattle SuperSonics in the National Basketball Association (NBA).  The SuperSonics finished the season in second place in the Western Conference with a 43–39 record, the same as the previous year and reached the playoffs for a second consecutive season, where they lost to the Phoenix Suns in the Conference Semifinals in six games.

2003–04 Seattle SuperSonics season: The 2003–04 NBA season was the SuperSonics' 37th season in the National Basketball Association.  During the offseason, the Sonics signed free agent Antonio Daniels.  The Sonics started the season in Tokyo, Japan with a two game series against the Los Angeles Clippers.  The Sonics got off to a 5–1 start, but played around .500 for the first half of the season.  Ray Allen played his first full season as a member of the Sonics after being acquired from the Milwaukee Bucks in a trade last February.  Despite missing the first 25 games due to an ankle injury, he was voted to play in the 2004 NBA All-Star Game.  This was Allen's fourth overall All-Star Game appearance and his first as a member of the Sonics.  However, despite a 7-game winning streak in March, the Sonics lost seven of their final ten games ending the season fifth in the Pacific Division with a 37–45 record, missing the playoffs.  Following the season, Brent Barry signed as a free agent with the San Antonio Spurs.

1973–74 Seattle SuperSonics season: The 1973–74 Seattle SuperSonics season was the 7th season of the Seattle SuperSonics in the National Basketball Association (NBA).  Following the resignation of Lenny Wilkens as a head coach after the 1971–72 season and a poor campaign in the 1972–73 season that saw the departure of general manager Bob Houbregs, the Sonics hired Boston Celtics' stalwart Bill Russell as head coach and general manager.  With Russell at the helm, the team finished in 6th place in the Western Conference with a 36–46 record.  The Sonics' home court, Seattle Center Coliseum, was the venue for the 1974 NBA All-Star Game.

1967–68 Seattle SuperSonics season: The 1967–68 Seattle SuperSonics season was the inaugural season for the expansion Seattle SuperSonics franchise in the National Basketball Association.  The team's official arena was the Seattle Center Coliseum.

Supporting paragraphs: 2003–04 Seattle SuperSonics season Brent Barry
Answer: Rick Barry