user: Question: How many outcomes occur on the date of January 31, 2010?
Columns: ['Outcome', 'No.', 'Date', 'Championship', 'Surface', 'Opponent in the final', 'Score in the final']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '62.', 'January 31, 2010', 'Australian Open, Melbourne, Australia (4)', 'Hard', 'Andy Murray', '6–3, 6–4, 7–6 (13–11)']
SQL:

assistant: SELECT COUNT("Outcome") FROM "Table" WHERE "Date" = 'January 31, 2010';