Table: doc_festival_data
Columns: year
date_opening
date_closing
opening_film
number_of_screening
award_winning_film

Question: Which award-winning film has a screening number of 50 films 50 televised?
SQL: SELECT "award_winning_film" FROM doc_festival_data WHERE "number_of_screening" = '50 films 50 televised'

Question: How many award-winning films have the opening film of encounters at the end of the world?
SQL: SELECT COUNT("award_winning_film") FROM doc_festival_data WHERE "opening_film" = 'Encounters at the End of the World'

Question: How many number of screenings have an opening film of the journey of vaan nguyen?
SQL: SELECT COUNT("number_of_screening") FROM doc_festival_data WHERE "opening_film" = 'The Journey of Vaan Nguyen'

Question: Which opening film has the opening date of august 23?
SQL: SELECT "opening_film" FROM doc_festival_data WHERE "date_opening" = 'August 23'

Question: Which award-winning film has a closing date of September 4?
SQL: SELECT "award_winning_film" FROM doc_festival_data WHERE "date_closing" = 'September 4'