Question: Who, Peter Duffell or Graham Cantwell, is an Irish film and television director, best known for directing the feature film "Anton"?

Context paragraphs:
The Callback Queen: The Callback Queen is a 2013 British romantic comedy independent film by Irish director Graham Cantwell, starring a largely British and Irish cast: Amy-Joyce Hastings, Mark Killeen, Seán T. O'Meallaigh, Ger Ryan, Vicki Michelle and Eoin Macken.

Juanita Wilson: Juanita Wilson is an Irish director and writer from Dublin.  Her short film "The Door" received an Irish Film and Television Award (IFTA) in 2009 and an Academy Award nomination in 2010.  Her debut feature film "As If I Am Not There" received the 2011 Irish Film and Television Award for best film, best script, and best director.

Norman Cohen: Norman Cohen (11 June 1936 in Dublin – 26 October 1983 in Van Nuys, California) was an Irish film director and producer, best known for directing two feature films based on television comedy programmes, "Till Death Us Do Part" (1969) and "Dad's Army" (1971).  He was also a director of several of the "Confessions of..." sex comedy series: "Confessions of a Pop Performer" (1975), "Confessions of a Driving Instructor" (1976) and "Confessions from a Holiday Camp" (1977).

Miguel Sapochnik: Miguel Sapochnik is an English film and television director and former storyboard artist.  He is best known as the director of the feature film "Repo Men", and as a director for the HBO epic fantasy series "Game of Thrones", for which he won the award for Outstanding Directing for a Drama Series at the 68th Primetime Emmy Awards and Directors Guild of America Award for Outstanding Directing – Drama Series at the 69th Directors Guild of America Awards.

John Crowley (director): John Crowley (born 19 August 1969) is an Irish film and theatre director.  He is best known for directing "Brooklyn" (2015) and his feature film debut "Intermission" (2003).  He is a brother of designer Bob Crowley.

Graham Cantwell: Graham Cantwell (born March 25, 1974) is an Irish film and television director.  He is best known for directing feature film "Anton" which achieved a three-week domestic cinema release and was nominated for three Irish Film and Television Awards in 2009.  His short film "A Dublin Story" was shortlisted for Academy Award Nomination in 2004 having picked up several film festival awards.  In 2010 he directed a new television drama "The Guards" for TV3 in Ireland.  Most recently he directed a romantic comedy set in the film industry in London, "The Callback Queen", which premiered at The Galway Film Fleadh in July 2013 and screened in the U.S. at The Jean Cocteau Cinema, owned and run by George_R. _R._Martin.

Dearbhla Walsh: Dearbhla Walsh is an Irish film and television director who has worked on drama series for several television channels in Ireland and the United Kingdom, including episodes of "EastEnders", "Shameless" and "The Tudors".  She won the 2009 Emmy Award for Outstanding Directing for a Miniseries, Movie or Dramatic Special for Part I of the serial "Little Dorrit".  In her acceptance speech, she acknowledged her domestic partner, RTÉ television presenter Anna Nolan.

Peter Duffell: Peter Duffell (born 1937) is a British film and television director and screenwriter, born in Canterbury, England.

Five Minutes of Heaven: Five Minutes of Heaven is a British and Irish film directed by Oliver Hirschbiegel from a script by Guy Hibbert.  The film was premiered on 19 January 2009 at the 25th Sundance Film Festival where it won the World Cinema Dramatic Directing Award for Oliver Hirschbiegel, and the World Cinema Screenwriting Award for Guy Hibbert.  As a television film it was broadcast on BBC Two on 5 April 2009, and also had an international feature film release.

8.5 Hours: 8.5 Hours is a 2008 Irish film written and directed by Brian Lally.  The film tells the story of one frantic day in the lives of four Dublin software workers during the final months of Ireland's Celtic Tiger boom years.  The film stars Lynette Callaghan, Art Kearns, Victor Burke and Jonathan Byrne.  The film won several awards on the Irish film festival circuit, including Best Irish Feature Film at the International Film Festival Ireland in Clonmel (2009), Best Actress award for Lynette Callaghan at the Yellow Fever Independent Film Festival in Belfast (2009) and was awarded 2nd place in the Best Feature category at the Waterford Film Festival.

Supporting paragraphs: Peter Duffell Graham Cantwell
Answer: Graham Cantwell