Question: George O'Malley is a fictional character from the medical drama television series "Grey's Anatomy", O'Malley married Callie Torres, played by which Mexican American actress, singer and songwriter?

Context articles: Callie Torres
Goodbye (Grey's Anatomy)
Family Affair (Grey's Anatomy)
Wishin' and Hopin' (Grey's Anatomy)
George O'Malley
Sara Ramirez
Good Mourning (Grey's Anatomy)
Izzie Stevens
Cristina Yang
Bend &amp; Break

Calliope Iphegenia "Callie" Torres, M.D. is a fictional character from the medical drama television series "Grey's Anatomy", which airs on the ABC in the United States.
 The character was created by series' producer Shonda Rhimes, and is portrayed by Sara Ramirez.
 She was introduced in season two, as a senior orthopedic resident, as a love interest for intern George O'Malley (T.R. Knight).
 Eventually becoming an attending orthopedic surgeon, the character was originally contracted to appear on a recurring basis, but received star billing in the third season.
"Goodbye" is the second episode of the sixth season of the American television medical drama "Grey's Anatomy", and the show's 104th episode overall.
 It was written by Krista Vernoff and directed by Bill D'Elia.
 The episode was originally broadcast on the American Broadcasting Company (ABC) in the United States on September 24, 2009.
 In "Goodbye", the staff at Seattle Grace Hospital come to terms with the death of their colleague Dr. George O'Malley (T.R. Knight).
 Further storylines include Dr. Richard Webber (James Pickens, Jr.) being engaged in a vehicular collision, Dr. Callie Torres (Sara Ramirez) receiving a job as an attending physician at a neighboring hospital, and Dr. Alex Karev (Justin Chambers)'s marriage with Dr. Izzie Stevens (Katherine Heigl) taking a toll after her near-death experience.
"Family Affair" is the twenty fourth episode, serving as the season finale of the twelfth season of the American medical drama television series "Grey's Anatomy", and is the 269th overall episode, which aired on ABC on May 19, 2016.
 The episode was written by William Harper and directed by Debbie Allen.
 At the time of its initial release, the episode was watched by 8.19 million viewers and was well received among the television critics.
 The episode marked the last appearance of longtime cast member Sara Ramirez, who played Callie Torres since the character's inception in the second season in 2006.
 Ramirez announced her departure from the series stating that she was “taking some welcome time off” as her character moved to New York City with her daughter.
"Wishin' and Hopin'" is the fourteenth episode of the third season of the American television medical drama "Grey's Anatomy", and the show's 50th episode overall.
 It was written by Tony Phelan and Joan Rater and directed by Julie Anne Robinson.
 The episode originally aired on the American Broadcasting Company (ABC) in the United States on February 1, 2007.
 In the episode, Dr. Meredith Grey (Ellen Pompeo) struggles with her Alzheimer's-stricken mother, Ellis Grey (Kate Burton), becoming temporarily lucid.
 Further storylines include Dr. Izzie Stevens (Katherine Heigl) and Dr. Miranda Bailey (Chandra Wilson) continuously seeking patients for their new clinic, Dr. Richard Webber (James Pickens, Jr.) dealing with the repercussions of his upcoming retirement, and Dr. George O'Malley (T.R. Knight) facing negative response from colleagues on his unexpected marriage to Dr. Callie Torres (Sara Ramirez).
George O'Malley is a fictional character from the medical drama television series "Grey's Anatomy", which airs on the American Broadcasting Company (ABC) in the United States.
 The character was created by series producer Shonda Rhimes, and was portrayed by actor T. R. Knight from 2005 to 2009.
 Introduced as a surgical intern at the fictional Seattle Grace Hospital, O'Malley worked his way up to resident level, while his relationships with his colleagues Meredith Grey (Ellen Pompeo), Cristina Yang (Sandra Oh), Izzie Stevens (Katherine Heigl) and Alex Karev (Justin Chambers) formed a focal point of the series.
 O'Malley married Callie Torres (Sara Ramirez) whom he later separated with to pursue a relationship with Izzie Stevens.
 O'Malley also had entertained a romantic interest with Meredith Grey and Olivia Harper (Sarah Utterback).
Sara Elena Ramírez (] ; born August 31, 1975) is a Mexican American actress, singer and songwriter.
 Born in Mazatlán, Sinaloa, to Mexican parents, she graduated with fine arts degree from the Juilliard School.
 She began acting in Broadway productions, making her debut with Paul Simon's "The Capeman", and later ventured into film and television roles.
 Ramirez is a recipient of a Tony Award, a Screen Actors Guild Award, and a Satellite Award among other accolades.
"Good Mourning" is the first episode of the sixth season of the American television medical drama "Grey's Anatomy", and the show's 103rd episode overall.
 It was written by Krista Vernoff and directed by Ed Ornelas.
 The episode was originally broadcast on the American Broadcasting Company (ABC) in the United States on September 24, 2009.
 In "Good Mourning", the physicians are seen dealing with the revelation that a dead John Doe is their beloved co-worker Dr. George O'Malley (T.R. Knight), and dealing with the aftermath of Dr. Izzie Stevens (Katherine Heigl)'s near-death experience.
 Further storylines include Dr. Callie Torres (Sara Ramirez) and Stevens trying to decide whether or not to donate O'Malley's organs and Dr. Derek Shepherd (Patrick Dempsey) being offered Dr. Richard Webber (James Pickens, Jr.)'s chief of surgery job.
Isobel Katherine "Izzie" Stevens, M.D. is a fictional character from the medical drama television series "Grey's Anatomy", which airs on the American Broadcasting Company (ABC) in the United States.
 The character was created by series producer Shonda Rhimes, and was portrayed by actress Katherine Heigl from 2005 to 2010.
 Introduced as a surgical intern at the fictional Seattle Grace Hospital, Izzie worked her way up to resident level, while her relationships with her colleagues Meredith Grey (Ellen Pompeo), Cristina Yang (Sandra Oh), George O'Malley (T.R. Knight) and Alex Karev (Justin Chambers) formed a focal point of the series.
Cristina Yang, M.D., Ph.D., is a fictional character from the medical drama television series "Grey's Anatomy", which has aired for over 12 years on the American Broadcasting Company (ABC) in the United States.
 The character was created by series producer Shonda Rhimes, and is portrayed by actress Sandra Oh.
 Introduced as a surgical intern at the fictional Seattle Grace Hospital, Yang worked her way up to resident level, eventually becoming a cardiothoracic surgical fellow, while her relationships with colleagues Meredith Grey (Ellen Pompeo), George O'Malley (T. R. Knight), Izzie Stevens (Katherine Heigl), and Alex Karev (Justin Chambers) formed a focal point of the series.
 Yang earlier in the series got engaged to Preston Burke (Isaiah Washington), in the past had a relationship with renowned surgeon and mentor Colin Marlow, and wed but later divorced Owen Hunt (Kevin McKidd).
"Bend & Break" is the fifth episode of the eleventh season of the American television medical drama "Grey's Anatomy", and is the 225th episode overall.
 It aired on October 23, 2014 on ABC in the United States.
 The episode was written by Meg Marinis and directed by Jesse Bochco.
 On its initial airing it was watched by 8.62 million viewers and mixed to positive reviews from the critics.
 In the episode, Callie Torres (Sara Ramirez) and Arizona Robbins (Jessica Capshaw) take a look into the problems that have contributed to their troubled marriage.
 At work, Callie immerses herself in the Veterans' project with Owen Hunt (Kevin McKidd) and spends more time with Meredith Grey (Ellen Pompeo), and Arizona struggles to impress Dr. Nicole Herman (Geena Davis).