Question: Do both directors of films Mastana (1970 Film) and The Dark At The Top Of The Stairs (Film) have the same nationality?

<P0-S0> Mastana is a 1970 Bollywood comedy film directed by Adurthi Subba Rao. <P0-S1> The film stars Mehmood and Vinod Khanna. <P0-S2> The film premiered on 16 October 1970 in Bombay. <P0-S3> The film is remake of the Telugu film" Sattekalapu Satteya"( 1969), directed by K. Balachander, starring Chalam and was remade in Kannada Language in 1980 as" Manku Thimma" by Dwarakish. <SEP> <P1-S0> Adurthi Subba Rao( 16 December 1912 – 1 October 1975) was an Indian film director, cinematographer, screenwriter, editor and producer known for his works predominantly in Telugu cinema, bollywood, and Tamil cinema. <P1-S1> Rao is widely regarded as the intellectual fountain head of Indian drama films. <P1-S2> The film was simultaneously shot in Tamil as" Pattaliyin Vetri". <P1-S3> Upon release both versions received critical acclaim. <P1-S4> The Telugu work was screened at the San Sebastián International Film Festival. <P1-S5> The film also won the National Film Award for Best Feature Film in Telugu for that year. <P1-S6> The 1964 film Doctor Chakravarthy was adapted by Rao based on Koduri Kousalya Devi's Novel" Chakrabhramanam". <P1-S7> The film was the first film to win the Nandi Award, instituted by Government of Andhra Pradesh in 1964. <P1-S8> The box office success was awarded the National Film Award for Best Feature Film in Telugu for that year. <P1-S9> Rao's next work was Mooga Manasulu based on the concept of reincarnation, the first of its kind in Indian cinema in the genre of semi-fiction intended to be more serious in tone with elements that encourage a broader range of moods throughout the narrative. <P1-S10> The film was remade in Hindi as" Milan"( 1967) directed by Rao himself, while the Tamil" Praptham"( 1971) was adapted from Rao's work. <P1-S11> The Telugu version received the National Film Award for Best Feature Film in Telugu, and the Filmfare Best Film Award( Telugu) in 1964 and was screened at the Karlovy Vary International Film Festival. <P1-S12> The film has garnered the National Film Award for Best Feature Film in Telugu, The Nandi Award for Best Feature Film, and the Filmfare Award for Best Film- Telugu for that year and was featured at the International Film Festival of India. <SEP> <P2-S0> The Dark at the Top of the Stairs is a 1960 American drama film. <P2-S1> Academy Award winner Delbert Mann directed the work of Robert Preston and Dorothy McGuire in the production. <P2-S2> Shirley Knight garnered an Oscar nomination for Best Supporting Actress, and Lee Kinsolving was nominated for a Golden Globe Award as Best Supporting Actor. <P2-S3> Knight was also nominated for two Golden Globes. <P2-S4> Mann's direction was nominated for a Directors Guild of America Award for Outstanding Directing in a Feature Film. <P2-S5> It was based on the Tony Award- nominated play of the same name by William Inge. <SEP> <P3-S0> Arthur Lee Kinsolving Jr.( August 30, 1938 – December 4, 1974), known professionally as Lee Kinsolving, was an American film, theater and television actor. <P3-S1> In 1960, Kinsolving was nominated for a Golden Globe for Best Supporting Actor at the 18th Golden Globe Awards for his role as Sammy Goldenbaum in the film" The Dark at the Top of the Stairs". <P3-S2> He lost the award to actor Sal Mineo. <SEP> <P4-S0> Delbert Martin Mann Jr. (January 30, 1920 – November 11, 2007) was an American television and film director. <P4-S1> He won the Academy Award for Best Director for the film "Marty" (1955), adapted from a 1953 teleplay of the same name which he had also directed. <P4-S2> From 1967 to 1971, he was president of the Directors Guild of America. <P4-S3> In 2002, he received the DGA's honorary life member award. <P4-S4> Mann was credited to have "helped bring TV techniques to the film world." <SEP> <P5-S0> Mr. Right is a 2009 British film directed by David Morris and Jacqui Morris. <P5-S1> The jointly- made gay- themed film is the debut for both directors.