Question: Who directed the film in which Tico Wells played Dexter Williams?

Context paragraphs:
Mississippi Masala: Mississippi Masala is a 1991 romantic drama film directed by Mira Nair, based upon a screenplay by Sooni Taraporevala, starring Denzel Washington, Sarita Choudhury, and Roshan Seth.  Set primarily in rural Mississippi, the film explores interracial romance between African Americans and Indian Americans in the United States.

Bonzi Wells: Gawen DeAngelo "Bonzi" Wells (born September 28, 1976) is an American former professional basketball player.  He played college basketball at Ball State University and was drafted in the 1998 NBA Draft.  In the NBA, Wells played for five teams from 1998 to 2008: the Portland Trail Blazers, Memphis Grizzlies, Sacramento Kings, Houston Rockets, and New Orleans Hornets.

Big Ain't Bad: Big Ain't Bad is a romantic comedy film, directed by Ray Culpepper and written by Brian Poe (aka Drayton Jamison).  It stars Sean Blakemore (2016 Daytime Emmy Winner as Outstanding Actor in a Supporting role on ABC-TV's General Hospital), Jade Jenise Dixon, Reginald Ballard, Tico Wells, and Troy Medley.  The film won the Audience Choice Award at the 2003 Hollywood Black Film Festival in Los Angeles, California.  It was the Kick Off Film to the Fox Theater's 75th Anniversary Summer Film Series in Atlanta in 2004.  It played in limited release in movie theaters, and was released to DVD (First Look) in 2005.

Dean Wells (American football): Dean Wells (born July 20, 1970 in Louisville, Kentucky) is a former American football linebacker who played in the NFL from 1993 to 2001.  He played for the Seattle Seahawks, Carolina Panthers, and New England Patriots.  Wells played college football at the University of Kentucky.

Tico Wells: Tico Wells is an African-American actor, known for his role as Choir Boy in the 1991 film "The Five Heartbeats".  He has also appeared on "The Cosby Show", "227", Hallmark movies and "Beverly Hills, 90210".  He was Tim in the movie "The Wish List", and played Dexter Williams, the younger brother of Denzel Washington's character Demetrius Williams, in "Mississippi Masala".  He starred as Kirkland J. Ellis, III, in the independent film "Big Ain't Bad", a romantic drama that won Auds honors at the Hollywood Black Film Festival.  He made a cameo in the Martin Lawrence show, "Martin" as "Sweet Reggie."

Billy Wells (American football): William Prescott Wells (December 7, 1931 – December 25, 2001) was an American football halfback who played in the National Football League (NFL) for the Washington Redskins, Pittsburgh Steelers, and the Philadelphia Eagles.  He also played in the American Football League (AFL) for the Boston Patriots.  Wells played college football at Michigan State University and was drafted in the fifth round of the 1954 NFL Draft.

Herbert Wells (soccer): Herbert “Herb” Wells (May 4, 1901 – November 1978) was a former U.S. soccer player.  Wells earned three caps with the U.S. national team in 1924.  His first cap came at the 1924 Summer Olympics.  Wells played the second U.S. game of the tournament, a loss to Uruguay in the quarterfinals.  Following its elimination from the tournament, the U.S. played two exhibition games.  Wells played both, a win over Poland and a loss to Ireland.  That was his last game with the national team.  At the time of the Olympics, he played for Fleisher Yarn.

Owen Wells (basketball): Owen Wells (December 9, 1950–April 27, 1993) was an American basketball player.  A 6'7" forward, he attended the University of Detroit Mercy and went to English High School in Boston, Massachusetts.  Wells played 33 games for the Houston Rockets during the 1974-75 NBA season, averaging 3.0 points per game.

The Five Heartbeats: The Five Heartbeats is a 1991 musical drama film directed by Robert Townsend, who co-wrote the script with Keenen Ivory Wayans.  Distributed by 20th Century Fox, the film's main cast includes Townsend, Michael Wright, Leon Robinson, Harry J. Lennix, Tico Wells, Harold Nicholas of the Nicholas Brothers, and Diahann Carroll.  The plot of the film (which is loosely based on the lives of several artists: The Dells, The Temptations, Four Tops, Wilson Pickett, James Brown, Frankie Lymon, Sam Cooke and others) follows the three decade career of the rhythm and blues vocal group The Five Heartbeats.  The film depicts the rise and fall of a Motown inspired soul act through the eyes of one of the Heartbeats, Donald "Duck" Matthews.

Greg Wells (baseball): Gregory De Wayne "Boomer" Wells (born April 25, 1954 in McIntosh, Alabama) is a former professional baseball player.  Wells played Major League Baseball for the Toronto Blue Jays in 1981 and for the Minnesota Twins in 1982 .  Wells also played Nippon Professional Baseball (NPB) for the Hankyu/Orix Braves/BlueWave and Fukuoka Daiei Hawks between 1983 –1992 .

Supporting paragraphs: Tico Wells Mississippi Masala
Answer: Mira Nair