Question: Which director is American, Mark L. Lester or Ken Loach?

Context paragraphs:
The Spirit of '45: The Spirit of '45 is a 2013 documentary film by British director Ken Loach, focused on and celebrating the radical changes in postwar Britain under the Labour government of Clement Attlee, which came to power in 1945.  Relying primarily on archive footage and interviews, and without a narrative voiceover, the film recounts the endemic poverty in prewar Britain, the sense of optimism that followed victory in World War II and the subsequent expansion of the welfare state, founding of the National Health Service and nationalisation of significant parts of the UK's economy.  The film documents the extent to which these achievements, as Loach sees them, have since been subject to attack in the decades that followed, particularly under the Conservative governments of Margaret Thatcher in the 1980s.  Loach said that the model for the film was "oral history, with pictures".

Rona Munro: Rona Munro (born 7 September 1959) is a Scottish writer.  She has written plays for theatre, radio, and television.  Her film work includes Ken Loach's "Ladybird, Ladybird" (1994), "Oranges and Sunshine" (2010) for Jim Loach and "Aimée & Jaguar" (1999), co-authored by German director Max Färberböck.

The Base (film): The Base is a 1999 action/thriller film written by Jeff Albert and Hesh Rephun, produced by Dana Dubosky and Mark L. Lester, directed by Mark L. Lester and starring Mark Dacascos, Tim Abell and Paula Trickey.

Mark L. Lester: Mark L. Lester (born November 26, 1946) is an American film director, screenwriter, and producer.  He is best known as a prolific director of cult films including the disco musical "Roller Boogie", the vigilante thriller film "Class of 1984", the Stephen King-adaptation "Firestarter" (1984), the Arnold Schwarzenegger action film "Commando" (1985), and the action-comedy "Armed and Dangerous" (1986), starring John Candy, Eugene Levy, and Meg Ryan.

The End of Arthur's Marriage: The End of Arthur's Marriage is a television satirical musical drama that was episode in "The Wednesday Play" series first broadcast on 17 November 1965.  It was an early work of director Ken Loach, and the script was written by poet Christopher Logue.  It is unusual in Loach's catalogue for the surrealism, and the director later said that he believed himself to have been "the wrong man for the job".  Main actor Ken Jones had previously worked with Loach on "Wear a Very Big Hat" and "3 Clear Sundays", and later featured in the controversial 1969 play "The Big Flame".

Ken Loach: Kenneth Charles Loach (born 17 June 1936) is an English director of television and independent film.  He is known for his socially critical directing style and for his socialist ideals, which are evident in his film treatment of social issues such as poverty ("Poor Cow", 1967), homelessness ("Cathy Come Home", 1966) and labour rights ("Riff-Raff", 1991, and "The Navigators", 2001).

Branko Tomović: Branko Tomović (Serbian Cyrillic: "Бранко Томовић"; born June 17, 1980) is a German-Serbian actor.  He was born in Münster, Germany, though his actual origin is from the Carpathians in Serbia.  His parents emigrated in the '70s from the Golubac Fortress area on the Danube and Branko was raised between Germany and Serbia before he studied acting at the prestigious Lee Strasberg Theatre Institute in New York City.  Tomović was first seen on the big screen in the lead role in the American Film Institute/Sundance drama "Remote Control", for which he received the OmU-Award at the Potsdam Film Festival.  Currently settled in London, with his dark, brooding looks he has appeared in striking roles on British Television.  He played the creepy main suspect Antoni Pricha, the Morgue Man, in Jack the Ripper thriller "Whitechapel", the pyromaniac Junky-Henchman Marek Lisowski in the final episodes of "A Touch of Frost" and Polish fighter pilot Miroslaw Feric in the World War II drama "The Untold Battle of Britain".  Tomovic has worked with internationally respected film directors as Ken Loach, Sönke Wortmann and Paul Greengrass.  He was named "One to Watch" by "Moviescope Magazine" in 2008 and recent film credits include The Bourne Ultimatum opposite Matt Damon (Dir.  Paul Greengrass), It's a Free World... (Dir.  Ken Loach), "The Wolf Man" (Dir.  Joe Johnston), "Pope Joan" (Dir.  Sönke Wortmann) and "Interview with a Hitman" (Dir.  Perry Bhandal).  In 2010, he won the 'Best Actor' Award at the San Francisco Short Film Festival and at The Accolade Film Awards for his performance as a Serbian soldier who is tormented by grief and guilt after being a witness of war crimes in the drama Inbetween.  He also stars opposite Debbie Harry in Jimmy Cauty's Road movie Believe the Magic and Steve Stone's ghost thriller Entity with Dervla Kirwan and Charlotte Riley.  Entity won two awards at the London Independent Film Festival 2013 and Best Film at the British Horror Film Festival where Branko was also nominated for Best Actor.  The British Filmmakers Alliance honoured him as Best International Actor for his role and he was also chosen as a Rising Star by Icon Magazine.  He is set to play the title character of Nikola Tesla in the upcoming bio-pic Tesla.  In 2014, he played Jack Bauer's right-hand man, the mysterious and dangerous Belcheck, next to Kiefer Sutherland in 24: Live Another Day.  He was also seen opposite Brad Pitt and Logan Lerman in David Ayer's WWII drama Fury.

The Base 2: Guilty as Charged: The Base 2: Guilty as Charged is a 2000 action/adventure film written by C. Courtney Joyner and Jeff Albert, produced Dana Dubovsky and Mark L. Lester, directed by Mark L. Lester and starring Antonio Sabato Jr. and James Remar.  It is also the sequel to the 1999 film "The Base".

Poor Cow: Poor Cow is a 1967 British drama film, directed by Ken Loach and based on Nell Dunn's novel of the same name.  It was Ken Loach's first feature film, after a series of successful TV productions.

Jim Loach: James Loach (born 6 June 1969) is an English film director.  He is the son of the film director Ken Loach.

Supporting paragraphs: Mark L. Lester Ken Loach
Answer: Mark L. Lester