Question: Who is in the entertainment industry, Raffi Indjejikian or Rouben Mamoulian?

Context paragraphs:
City Streets (film): City Streets is a 1931 American Pre-Code film noir directed by Rouben Mamoulian and starring Gary Cooper, Sylvia Sidney and Paul Lukas.

Raffi Indjejikian: Raffi Indjejikian (BComm, MBA, PhD) is the Robert L. Dixon Collegiate Professor of Accounting at the Stephen M. Ross School of Business at the University of Michigan.  His research is primarily focused on the development of models and theories illustrating the role of managerial accounting in decision-making through the basis of agency theory.

Silk Stockings (film): Silk Stockings is a 1957 Metrocolor Metro-Goldwyn-Mayer CinemaScope musical film adaptation of the 1955 stage musical of the same name, which itself was an adaptation of the film "Ninotchka" (1939).  "Silk Stockings" was directed by Rouben Mamoulian and stars Fred Astaire and Cyd Charisse.  The supporting cast includes Janis Paige, Peter Lorre, Jules Munshin, and George Tobias repeating his Broadway role.

Rouben Mamoulian: Rouben Zachary Mamoulian ( , in Armenian: Ռուբէն Մամուլեան ) (October 8, 1897 – December 4, 1987) was an American film and theatre director.

Porgy (play): Porgy: A Play in Four Acts is a play by Dorothy Heyward and DuBose Heyward, adapted from the short novel by DuBose Heyward.  It was first produced by the Theatre Guild and presented October 10, 1927 – August 1928 at the Guild Theatre in New York City.  Featuring a cast of African Americans at the insistence of its authors—a decision unusual for its time—the original production starred Frank Wilson, Evelyn Ellis, Jack Carter, and Rose McClendon.  "Porgy" marked the Broadway directing debut of Rouben Mamoulian.  The play ran a total of 55 weeks in New York, and the original cast toured the United States twice and performed for 11 consecutive weeks in London.

We Live Again: We Live Again (1934) is a film adaptation of Leo Tolstoy's 1899 novel "Resurrection" ("Voskraeseniye"), starring Anna Sten and Fredric March.  Directed by Rouben Mamoulian, the screenplay was written by Maxwell Anderson with contributions from a number of writers, including Preston Sturges and Thornton Wilder.

Wings Over Europe (play): Wings Over Europe was a 1928 Broadway three-act play written by Robert Nichols and Maurice Browne, produced by the Theatre Guild and directed by Rouben Mamoulian.  It opened on December 10, 1928 at the

Blood and Sand (1941 film): Blood and Sand (1941) is a Technicolor film directed by Rouben Mamoulian, produced by 20th Century Fox, and starring Tyrone Power, Linda Darnell, Rita Hayworth, and Alla Nazimova.  It is based on the critical 1908 Spanish novel about bullfighting, "Blood and Sand" ("Sangre y arena"), by Vicente Blasco Ibáñez.  The supporting cast features Anthony Quinn, Lynn Bari, Laird Cregar, J. Carrol Naish, John Carradine and George Reeves.

Becky Sharp: Becky Sharp is a 1935 American historical drama film directed by Rouben Mamoulian and starring Miriam Hopkins.  Other supporting cast were William Faversham, Frances Dee, Cedric Hardwicke, Billie Burke, Alison Skipworth, Nigel Bruce, and Alan Mowbray.

Golden Boy (film): Golden Boy is a 1939 drama romance film based on the Clifford Odets play of the same name.  Directed by Rouben Mamoulian, The film stars Barbara Stanwyck, Adolphe Menjou and William Holden.

Supporting paragraphs: Raffi Indjejikian Rouben Mamoulian
Answer: Rouben Zachary Mamoulian