human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Year, Date (Opening), Date (Closing), Opening Film, Number of Screening, Award-Winning Film
###Question: How many number of screenings have an opening film of the journey of vaan nguyen?
gpt
SELECT COUNT Number of Screening FROM table WHERE Opening Film = The Journey of Vaan Nguyen