Question: What is the current role of the writer of the play Superior Donuts?

Context paragraphs:
Katey Sagal: Catherine Louise Sagal (born January 19, 1954) is an American actress and singer-songwriter.  She is best known for her role as Peggy Bundy, Al's sarcastic, lazy, bon bon-eating wife, on "Married... with Children" and for her role voicing the character Leela on the animated science-fiction series "Futurama" from 1999 to 2003 and 2008 to 2013, as well as for starring on the show "8 Simple Rules" in the role of Cate Hennessy.  In the latter role, she worked with John Ritter until his death, leading to Sagal's taking over as the series lead for the remainder of the show's run.  Sagal has been married to "Sons of Anarchy" creator Kurt Sutter since 2004.  Currently, Sagal is a series regular on CBS's Superior Donuts.

Anna Baryshnikov: Anna Katerina Baryshnikov (born May 22, 1992) is an American actress.  She had her breakout role as Sandy in the 2016 film "Manchester by the Sea".  Since February 2017, she has starred in the CBS sitcom "Superior Donuts".

Maz Jobrani: Maziyar “Maz” Jobrani (Persian: مازیار جبرانی‎ ‎ ; born February 26, 1972), is an Iranian-American comedian and actor who is part of the "Axis of Evil" comedy group.  The group appeared on a comedy special on Comedy Central.  Jobrani has also appeared in numerous films, television shows, including "Better Off Ted", on radio, and in comedy clubs.  His filmography includes roles in "The Interpreter", "Friday After Next", and "Dragonfly".  He appears as a regular character on the 2017 CBS sitcom "Superior Donuts".

New York Street Games: New York Street Games is a 2010 documentary film directed by Matt Levy about children's games played by kids in New York City for centuries.  The games are fondly remembered by people who grew up in the city.  Current and historical documentary footage shows children playing these games, interspersed with scenes of celebrities discussing their own childhood experiences playing these games on the streets of New York.  The story is brought to the present with discussions of the current role of street games and opinions as to what kids lose by not having the freedom to play without adult supervision, most importantly the social skills developed when kids could play in the streets.

Superior Donuts (TV series): Superior Donuts is an American sitcom that airs on CBS.  The series aired as a "special preview" on February 2, 2017, following "The Big Bang Theory".  It then premiered in its regular Monday at 9:00 p.m. timeslot on February 6, 2017.  The series is based on the play of the same name by Tracy Letts.

János Pásztor (diplomat): János Pásztor (born 1955) is a Hungarian diplomat, the Senior Adviser to the Secretary-General on Climate Change.  He joined his current role in January 2016 at the request of United Nations Secretary-General Ban Ki-moon.  Prior to his current role he was Assistant Secretary-General on Climate Change in the Executive Office of the Secretary-General of the United Nations in New York City.  He was appointed Assistant Secretary-General in January 2015 after taking leave of absence from the World Wide Fund for Nature International where he was Policy and Science Director and acting Director for Conservation.

Tracy Letts: Tracy Letts (born July 4, 1965) is an American playwright, screenwriter and actor.  He received the 2008 Pulitzer Prize for Drama for his play "" and a Tony Award for his portrayal of George in the revival of "Who's Afraid of Virginia Woolf?"  He is also known for his portrayal of Andrew Lockhart in seasons 3 and 4 of Showtime's "Homeland", for which he has been nominated for two Screen Actors Guild Awards as a member of the ensemble.  He currently portrays Nick on the HBO comedy "Divorce".

John R. Montgomery: John R. Montgomery IV is a television producer and advertising industry veteran.  Currently, he serves as an Executive Producer for the CBS series "Superior Donuts".  Previously, he was an Executive Producer on the CW reboot of "MADtv" and the Creator/Executive Producer of the web series "Attention Deficit Theater", which made its debut at SXSW and is available on CW Seed.  In addition, Montgomery was an Executive Producer on CBS' "The Crazy Ones".  There, he also received the unique credit: "Suggested by the Experiences of" as the series was based in part on Montgomery's 33-year career at the Leo Burnett advertising agency in Chicago.  Show creator David E. Kelley cited Montgomery as the inspiration for the "The Crazy Ones" and character Simon Roberts, portrayed by Robin Williams.

Jermaine Fowler: At age 20, he moved to New York City from Maryland.  By day, he job searched and by night he was performing at local open mics in Times Square.  In 2012, he was then touring the country performing at comedy clubs and colleges.  In 2013, he was cast in MTV2's "Guy Code" and writing, producing, and starring in his own pilots.  In 2014, he starred in "Friends of the People" which lasted two seasons on TruTV.  In 2015, Jermaine produced and starred in his debut comedy special, "Give 'Em Hell, Kid", that he licensed to Showtime.  In 2017, Fowler became an executive producer and star of "Superior Donuts" on CBS which was renewed for a second season on March 23, 2017, also has a recurring role on HBO's "Crashing."

Superior Donuts: Superior Donuts is a play by American playwright Tracy Letts.  Its world premiere was staged by the Steppenwolf Theatre Company in Chicago in 2008, and it premiered on Broadway in 2009.

Supporting paragraphs: Superior Donuts Tracy Letts
Answer: Nick