Question: Who is the director of the 2017 American romantic comedy film in which Zoe Kazan portrays Emily Gardner?

Context paragraphs:
The F Word (2013 film): The F Word (released in some countries as What If?)  is a 2013 Canadian romantic comedy film directed by Michael Dowse and written by Elan Mastai, based on TJ Dawe and Michael Rinaldi's play "Toothpaste and Cigars".  The film stars Daniel Radcliffe, Zoe Kazan, Megan Park, Adam Driver, Mackenzie Davis and Rafe Spall and follows a pair of best friends who begin to have feelings for each other.

Zoe Kazan: Zoe Swicord Kazan (born September 9, 1983) is an American actress and playwright.  Kazan made her acting debut in "Swordswallowers and Thin Men" (2003) and later appeared in films such as "The Savages" (2007), "Revolutionary Road" (2008) and "It's Complicated" (2009).  She starred in "happythankyoumoreplease" (2010), "Meek's Cutoff" (2010) and "Ruby Sparks" (2012), writing the screenplay for the latter.  In 2014, she starred in the film "What If" and the HBO mini-series "Olive Kitteridge", for which she received an Emmy nomination.  In 2017, she portrayed Emily Gardner, who is based on Emily V. Gordon, in the film "The Big Sick".

Maya Kazan: Maya Kazan (born November 24, 1986) is an American stage, TV and film actress and director.  She is known for playing Caroline in "Frances Ha", Eleanor Gallinger on "The Knick" and Mabel Thompson on "Boardwalk Empire".  She is the daughter of screenwriters Nicholas Kazan and Robin Swicord.  She is the granddaughter of film director Elia Kazan and playwright Molly Kazan.  Maya is the younger sister of actress Zoe Kazan.

Some Girl(s) (film): Some Girl(s) is a 2013 American comedy film directed by Daisy von Scherler Mayer and written by Neil LaBute.  It is based on the play of the same name, also written by LaBute.  The film stars Adam Brody, Kristen Bell, Zoe Kazan, Mía Maestro, Jennifer Morrison and Emily Watson.  The film was released on June 26, 2013, by Leeden Media.

Emily V. Gordon: Emily Vance Gordon (born in 1979) is an American writer, producer, and podcast host.  She is best known for co-writing the 2017 romantic comedy film "The Big Sick", which she wrote with her husband, the comic Kumail Nanjiani.  The film is about their relationship, with Nanjiani playing himself and Zoe Kazan playing Gordon (renamed Emily Gardner).  Gordon also co-created the live show "The Meltdown with Jonah and Kumail" and its TV counterpart for Comedy Central.  She has written for TV ("The Carmichael Show"), a book ("Super You"), and for several online and print publications.

The Big Sick: The Big Sick is a 2017 American romantic comedy film directed by Michael Showalter and written by Emily V. Gordon and Kumail Nanjiani.  It stars Nanjiani, Zoe Kazan, Holly Hunter, Ray Romano, Adeel Akhtar, and Anupam Kher, and follows an interracial couple that has to deal with their cultural differences, loosely based on the real-life romance between Nanjiani and Gordon.

Wildlife (film): Wildlife is an upcoming American drama directed by Paul Dano and co-written by Dano and Zoe Kazan.  It is based on the 1990 novel "Wildlife" by Richard Ford.  The film will star Jake Gyllenhaal, Carey Mulligan, Ed Oxenbould, and Zoe Margaret Colletti, and will mark Dano's debut as a director.

It's Complicated (film): It's Complicated is a 2009 American romantic comedy film written and directed by Nancy Meyers.  It stars Meryl Streep as a successful bakery owner and single mother of three who starts a secret affair with her former husband, played by Alec Baldwin, ten years after their divorce – only to find herself drawn to another man: her architect Adam (portrayed by Steve Martin).  The film also features supporting performances by Lake Bell, Hunter Parrish, Zoe Kazan, John Krasinski, Mary Kay Place, Robert Curtis Brown and Rita Wilson, among others.

My Blind Brother: My Blind Brother is a 2016 American romantic comedy-drama film directed by Sophie Goodhart.  It stars Adam Scott, Nick Kroll, Jenny Slate, Zoe Kazan and Charlie Hewson.  The film had its world premiere at South by Southwest on March 12, 2016.  The film was released on September 23, 2016, in a limited release and through video on demand by Orion Pictures and Starz Digital.

Ruby Sparks: Ruby Sparks is a 2012 romantic comedy-drama film directed by Jonathan Dayton and Valerie Faris, and written by Zoe Kazan.  It stars Paul Dano as an anxious novelist whose fictional character, Ruby Sparks, played by Kazan, comes to life.

Supporting paragraphs: Zoe Kazan The Big Sick
Answer: Michael Showalter