Question: Who is the director of the upcoming Canadian drama film starring the actor who played the role of Jack Newsome in "Room"?

Context paragraphs:
Jacob Tremblay: Jacob Tremblay ( ; born October 5, 2006) is a Canadian child actor.  His breakout performance was his co-starring role as Jack Newsome in "Room" (2015), for which he won the Critics' Choice Movie Award for Best Young Performer and the Academy of Canadian Cinema and Television Award for Best Performance by an Actor in a Leading Role, and was nominated for the Screen Actors Guild Award for Outstanding Performance by a Male Actor in a Supporting Role.

The Death and Life of John F. Donovan: The Death and Life of John F. Donovan is an upcoming Canadian drama film, co-written, co-produced and directed by Xavier Dolan in his English-language debut.  It stars Kit Harington, Natalie Portman, Jessica Chastain, Susan Sarandon, Kathy Bates, Jacob Tremblay, Ben Schnetzer, Thandie Newton, Amara Karan, Chris Zylka, Jared Keeso, Emily Hampshire and Michael Gambon.

On the Trail of Igor Rizzi: On the Trail of Igor Rizzi (French: "Sur la trace d'Igor Rizzi" ) is a 2006 Canadian drama film starring Laurent Lucas, written and directed by Noël Mitrani.  The film's production companies are Atopia and StanKaz Films.  The distributor is also Atopia in Canada and United States.  This film won the Award for Best Canadian First Feature Film at 2006’s Toronto International Film Festival.

The True Nature of Bernadette: The True Nature of Bernadette (French: La Vraie Nature de Bernadette ) is a 1972 Canadian drama film directed by Gilles Carle.  It was entered into the 1972 Cannes Film Festival.  The film was also selected as the Canadian entry for the Best Foreign Language Film at the 45th Academy Awards, but was not accepted as a nominee.  In 1984 the Toronto International Film Festival ranked the film tenth in the Top 10 Canadian Films of All Time.  The film won Canadian Film Awards for Director, Actress (Micheline Lanctôt), Supporting Actor (Donald Pilon) and Musical Score.

List of accolades received by Room: "Room" is a 2015 Canadian-Irish drama film directed by Lenny Abrahamson.  It is an adaptation of Emma Donoghue's novel of the same name who also wrote the screenplay.  Brie Larson stars as Joy Newsome, an abducted mother held captive for seven years with her five-year-old son Jack, played by Jacob Tremblay.  Joan Allen, William H. Macy, and Sean Bridgers feature in supporting roles in the film.  "Room" premiered at the Telluride Film Festival on September 4, 2015, with A24 later providing the film a wide release on January 22, 2016 at over 800 theaters in the United States and Canada.  The film grossed a worldwide box office total of over $35 million on a production budget of $13 million.  Rotten Tomatoes, a review aggregator, surveyed 261 reviews and judged 94 percent to be positive.

The Poet (film): The Poet is a 2007 Canadian drama film starring Nina Dobrev, Colm Feore, Roy Scheider, Kim Coates and Daryl Hannah.  It was written by Jack Crystal and directed by Damian Lee, with an estimated budget of CAD $11 million.

Porcupine Lake: Porcupine Lake is an upcoming Canadian drama film directed by Ingrid Veninger.  It was screened in the Contemporary World Cinema section at the 2017 Toronto International Film Festival.

Pyewacket (film): Pyewacket is an upcoming Canadian thriller film.  It is written and directed by Adam MacDonald and starring Laurie Holden and Nicole Muñoz.  It was screened in the Contemporary World Cinema section at the 2017 Toronto International Film Festival.

Circle of Two: Circle of Two is a 1981 Canadian drama film starring Richard Burton as a 60-year-old artist who falls in love with a sixteen-year-old played by Tatum O'Neal.  It was the last film directed by acclaimed film noir director Jules Dassin.  Controversially, O'Neal - sixteen at the time of filming - posed for a topless scene.

White Room (film): White Room is a Canadian drama film, released in 1990, written and directed by Patricia Rozema, starring Maurice Godin, Kate Nelligan and Sheila McCarthy.  Ziggy Lorenc and Erika Ritter also have cameo appearances in the film as interviewers.

Supporting paragraphs: The Death and Life of John F. Donovan Jacob Tremblay
Answer: Xavier Dolan