Table: fencing_2010_summer_youth
Columns: event_date
event_day
approx_duration
starting_time
event_details

Question: How many event dates occurred when event details were women's sabre?
SQL: SELECT COUNT("event_date") FROM fencing_2010_summer_youth WHERE "event_details" = 'Women''s Sabre'

Question: What is every value for approximate duration when event details is women's foil?
SQL: SELECT "approx_duration" FROM fencing_2010_summer_youth WHERE "event_details" = 'Women''s Foil'

Question: What is every event date on Sunday with a starting time of 9:30 am?
SQL: SELECT "event_date" FROM fencing_2010_summer_youth WHERE "event_day" = 'Sunday' AND "starting_time" = '9:30 am'