Question: What university was Troy Jackson's brother a point guard for?

Context paragraphs:
Troy Jackson: Troy Jackson (January 11, 1973February 20, 2011) was an American basketball player.  The younger brother of former NBA player Mark Jackson, he was a member of the AND1 Mixtape Tour, known by his streetball nickname "Escalade".  Jackson was listed by AND1 at 6'10" and 375 pounds.

Jai Lucas: Jai Powell Lucas (born December 5, 1988) is an assistant coach for the Texas Longhorns and a former American professional basketball player, as well as a former NCAA college basketball player for the Texas Longhorns.  He was a McDonald's All American and was rated 20th by ESPN class of 2007.  Lucas previously played for the University of Florida, but decided to transfer from the Florida Gators men's basketball team, due to lack of playing time at his favored position of point guard.  Though Lucas started for the Gators, he was moved out of his natural position to that of the shooting guard in the starting rotation, because teammate Nick Calathes was favored at the point guard position.  He averaged just below double figures in scoring, and also has 2.3 assists per game.  In November 2008, Lucas announced his intentions to transfer from Florida.  Jai Lucas announced his intention to transfer to Texas on December 28, 2008.

Bennett Jackson: Bennett Troy Jackson, Jr. (born September 16, 1991) is an American football Safety who is currently a free agent.  He was drafted by the Giants in the sixth round of the 2014 NFL Draft.  He played college football at Notre Dame.

Point guard: The point guard (PG), also called the one or point, is one of the five positions in a regulation basketball game.  A point guard has perhaps the most specialized role of any position.  Point guards are expected to run the team's offense by controlling the ball and making sure that it gets to the right players at the right time.  Above all, the point guard must totally understand and accept their coach's game plan; in this way, the position can be compared to a quarterback in American football or a playmaker in association football (soccer).  While the guard must understand and accept the coach's gameplan, he must also be able to adapt to what the defense is allowing, and he also must control the pace of the game.

Joel Hart (basketball): Joel Hart (born 24 August 1984 in Christchurch, New Zealand), is a New Zealand basketballer who currently plays as a point guard for the Canterbury Rams in the New Zealand National Basketball League.  Hart played his high school basketball at Kaiapoi High School where he excelled, eventually making the New Zealand Under 19 basketball team.  In the 2003 NBL season, Hart made his Canterbury Rams debut playing in three matches, without scoring a point.  During the 2004 and 2005 NBL season's he featured in a handful of matches also, but without much impact.  In the current 2006 New Zealand National Basketball League season, Hart is relishing playing under new rams head coach, Chris Sparks, where he is backing up Jeremy Kench at the point guard position.  On 11 May 2006 Hart had a then career high ten points in a victory over the Taranaki Mountain Airs .  Hart then backed this up with an outstanding all round performance on 27 May 2006 registering a new career high of 23 points against the Waikato Pistons, where he hit 4 three point field goals.

Bob Cousy Award: The Bob Cousy Award presented by The College of the Holy Cross (or Bob Cousy Collegiate Point Guard of the Year Award) is an annual basketball award given by the Naismith Memorial Basketball Hall of Fame to the top men's collegiate point guard.  It is named after six-time National Basketball Association (NBA) champion Bob Cousy, who played point guard for the Boston Celtics from 1950 to 1963.  Cousy won six championships with the Celtics.

Igor Rakočević: Igor Rakočević (; born March 29, 1978) is a retired Serbian professional basketball player.  He is 1.94 m (6 ft 4 ½ in) tall.  A two-time All-EuroLeague Team member and three-time Alphonso Ford Trophy winner, he played at both the point guard and shooting guard positions, but spent the vast majority of his career playing as a shooting guard.  He is the son of Serbian former basketball player Goran Rakočević, who played as a point guard for Crvena zvezda.  Since February 2015, he has been a vice-president of the Basketball Federation of Serbia, in charge of men’s basketball.

Mark Jackson (basketball): Mark A. Jackson (born April 1, 1965) is an American former National Basketball Association (NBA) player and coach.  A point guard from St. John's University, he played for the New York Knicks, Los Angeles Clippers, Indiana Pacers, Denver Nuggets, Toronto Raptors, Utah Jazz and Houston Rockets in the NBA in a career spanning from 1987 to 2004.

Aaron Jackson (basketball): Aaron Lee Jackson (born May 6, 1986) is an American professional basketball player for the Beijing Ducks of the Chinese Basketball Association (CBA).  Standing at 193 cm , he plays at both the point guard and shooting guard positions, with point guard being his main position.

Southeastern Indian Artists Association: The Southeastern Indian Artists Association (SEIAA) is located in northeastern Oklahoma.  Formerly known as the Cherokee Artists Association, the group promotes and protects the interests of Native American, Southeastern, and Native Artists.  The Cherokee Artists Association has over one hundred Native Artists as members.  Artist Members are verified as tribal members as stated in the Indian Arts and Crafts Act.  The group also operates a cooperative art gallery.  Members include Martha Berry, Mike Dart, Bill Glass Jr., Demos Glass, Sharon Irla, Jane Osti, Troy Jackson, and Shan Goshorn.

Supporting paragraphs: Troy Jackson Mark Jackson (basketball)
Answer: St. John's University