Question: Roland West and Debarun Pal are both known for what profession in the film industry?

Context articles: Norokhadok Brikkho
Debarun Pal
Corsair (film)
Roland West
Alibi (1929 film)
The Bat (1926 film)
The Dove (1927 film)
The Silver Lining (1921 film)
Cinema of Pakistan
The Bat Whispers

Norokhadok Brikkho is a Bengali adventure thriller film directed by Debarun Pal, The film was released on 5 December 2013 and it was screened at Nandan, Kolkata at the Kolkata Short Film Festival 2013.
 It stars Plaban Chakraborty, Krishnasish Pal and Dipa Bose.
 The plot revolves around a deserted village that leads a Man-Eater Tree.
 The film gained positive response from both the audience and critics.
Debarun Pal (born February 14, 1987) is an Indian Film Editor, Film Director & Cinematographer.
 He shoots and produces many of his films in his native Kolkata and India.
 He has directed successful and groundbreaking Bengali Films such as Norokhadok Brikkho in 2013, which was one of the first commercial hit, under his own production house The Emperor Studios.
Corsair is a 1931 American pre-Code crime drama written, produced and directed by Roland West.
 The film is based on the 1931 novel "Corsair, a Pirate in White Flannels" by Walton Green and takes place in and was shot during the era of Prohibition in the United States.
 The film stars Chester Morris and Thelma Todd (credited as Alison Loyd).
Roland West (February 20, 1885 – March 31, 1952) was a Hollywood director known for his innovative proto-film noir movies of the 1920s and early 1930s.
Alibi is a 1929 American crime film directed by Roland West.
 The screenplay was written by West and C. Gardner Sullivan, who adapted the 1927 Broadway stage play, "Nightstick", written by Elaine Sterne Carrington, J.C. Nugent, Elliott Nugent and John Wray.
 Alternate titles include "The Perfect Alibi" and "Nightstick".
The Bat is a 1926 American silent film based on the 1920 Broadway hit "The Bat" by Mary Roberts Rinehart and Avery Hopwood, directed by Roland West and starring Jack Pickford and Louise Fazenda.
 The film was an influence in the creation of the fictional character Batman.
The Dove (1927) is an American silent film directed by Roland West and starring Norma Talmadge, Noah Beery, and Gilbert Roland, and based on a 1925 Broadway play by Willard Mack.
The Silver Lining is a 1921 American silent drama film directed by Roland West.
 It is not known whether the film currently survives.
The Cinema of Pakistan or Pakistani cinema (Urdu: ‎ ) refers to the filmmaking industry in Pakistan.
 Pakistan is home to several film studios centres, primarily located in its two largest cities - Karachi and Lahore.
 Pakistani cinema has played an important part in Pakistani culture, and in recent years has begun flourishing again after years of decline, delivering entertainment to audiences in Pakistan and expatriates abroad.
 Several film industries are based in Pakistan, which tend to be regional and niche in nature.
 Over 10,000 Urdu feature-films have been produced in Pakistan since 1948, as well as over 8000 Punjabi, 6000 Pashto and 2000 Sindhi feature-length films.
 The first film ever produced was "Husn Ka Daku" in 1930, directed by Abdur Rashid Kardar in Lahore.
 The first Pakistani-film produced was "Teri Yaad", directed by Daud Chand in 1948.
 Between 1947 and 2007, Pakistani cinema was based in Lahore, home to the nation's largest film industry (nicknamed Lollywood).
 Pakistani films during this period attracted large audiences and had a strong cult following, was part of the cultural mainstream, widely available and imitated by the masses.
 During the early 1970s, Pakistan was the world's fourth largest producer of feature films.
 However, between 1977 and 2007, the film industry of Pakistan went into decline due to Islamization, strengthening of censorship laws and an overall lack of quality.
 Throughout the 1980s and 1990s, the film industry went through several periods of ups and downs, a reflection of its dependency on state funding and incentives.
 By 2000, the film industry in Lahore had collapsed and saw a gradual shift of Pakistani actors, actresses, producers and filmmakers from Lahore to Karachi.
 By 2007, the wounds of Pakistan's collapsed film industry began to heal and Karachi had cemented itself as the centre of Pakistani cinema.
 Quality and new technology led to an explosion of alternative form of Pakistani cinema.
 The shift has been seen by many as the leading cause for the "resurgence of Pakistani cinema".
 Despite the industry crisis starting in the mid-1980s, Pakistani films have retained much of its distinctive identity.
 Since the shift to Karachi, Pakistani films have once again began attracting a strong cult following.
The Bat Whispers is a 1930 American Pre-Code mystery film directed by Roland West, produced by Joseph M. Schenck, and released by United Artists.
 The film is based on the 1920 mystery play "The Bat", written by Avery Hopwood and Mary Roberts Rinehart and previously adapted to film in 1926.