user: Question: What is the sum of the year for 5 February?
Columns: ['Year', 'Competition', 'Date', 'Location', 'Score', 'Result']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2011.0, 'Asia/Oceania Zone, Group II, 5th–6th Play-off', '5 February', 'Nonthaburi ( THA )', '2–1', 'Won']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Date" = '5 February';