The EVA that started on 8 July 12:38 went for how long?
CREATE TABLE table_name_83 (duration VARCHAR, start_date_time VARCHAR)
SELECT duration FROM table_name_83 WHERE start_date_time = "8 july 12:38"
### Context: CREATE TABLE table_name_83 (duration VARCHAR, start_date_time VARCHAR) ### Question: The EVA that started on 8 July 12:38 went for how long? ### Answer: SELECT duration FROM table_name_83 WHERE start_date_time = "8 july 12:38"