Question: What nationality is the director of film Krantikaal?

Context paragraphs:
title: Dana Blankstein
paragraph_text: Dana Blankstein- Cohen( born March 3, 1981) is the director of the Israeli Academy of Film and Television. She is a film director, and an Israeli culture entrepreneur.
title: Peter Levin
paragraph_text: Peter Levin is an American director of film, television and theatre.
title: John Farrell (businessman)
paragraph_text: John Farrell is the director of YouTube in Latin America.
title: Ian Barry (director)
paragraph_text: Ian Barry is an Australian director of film and TV.
title: Krantikaal
paragraph_text: Krantikaal( English title: Critical Encounter)( 2005) is an Indian Bengali feature film directed by Sekhar Das of Mahulbanir Sereng fame.
title: Olav Aaraas
paragraph_text: Olav Aaraas( born 10 July 1950) is a Norwegian historian and museum director. He was born in Fredrikstad. From 1982 to 1993 he was the director of Sogn Folk Museum, from 1993 to 2010 he was the director of Maihaugen and from 2001 he has been the director of the Norwegian Museum of Cultural History. In 2010 he was decorated with the Royal Norwegian Order of St. Olav.
title: John Donatich
paragraph_text: John Donatich is the Director of Yale University Press.
title: Brian Kennedy (gallery director)
paragraph_text: Brian Patrick Kennedy( born 5 November 1961) is an Irish- born art museum director who has worked in Ireland and Australia, and now lives and works in the United States. He is currently the director of the Peabody Essex Museum. He was the director of the Toledo Museum of Art in Ohio from 2010 to 2019. He was the director of the Hood Museum of Art from 2005 to 2010, and the National Gallery of Australia( Canberra) from 1997- 2004.
title: Michael Govan
paragraph_text: Michael Govan( born 1963) is the director of the Los Angeles County Museum of Art since 2006. Prior to this, Govan worked as the director of the Dia Art Foundation in New York City.
title: Sekhar Das
paragraph_text: Sekhar Das (alternate spelling Shekhar Das; born 24 November 1952) is a Bengali Movie director, scriptwriter, actor and producer. Sekhar Das with three award winning feature films to his credit is one of the leading filmmakers of Bengal. "Jogajog" (Relationships) based on Nobel Laureate Rabindranath Tagore's classic novel has been his 11th feature film, of which four features were made for television release and others for theatre release. He also made over 20 short films for Television. Resigning from a highly successful corporate career in 1997, Sekhar started his professional career in films and television, although he earned highest reputation as an actor par excellence but preferred writing scripts in the initial stage of his career, one of which, namely, Prohor won the national and International awards. Soon he took up direction in TV and films. Directed many mystery thrillers for a leading TV channel, possibly he is the only director internationally known to have adapted great Russian Playwright Anton Chekov’s all four classics in Bengali for TV film .A globe trotter that he has been , Sekhar Das had been associated with a travelogue program for a TV Channel for nearly three years as presenter, writer and director. This program covered Europe,particularly France and Germany,from Asia, it was Vietnam, Malaysia,Singapore, Australia. He served on the juries for different international film festivals,was also jury for the national awards in India, and he was selected as one of the selection committee members for nominating Indian film to Oscar.

Reasoning steps:
Krantikaal director Sekhar Das
Sekhar Das country of citizenship Indian

Answer: spans: Indian