user: Question: Which Location Attendance has a Date of April 15?
Columns: ['Game', 'Date', 'Team', 'Score', 'High points', 'High rebounds', 'High assists', 'Location Attendance', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [75.0, 'April 1', '@ Boston', 'L 109–111 (2OT)', 'Gerald Wallace (20)', 'Gerald Wallace , Emeka Okafor (10)', 'Raymond Felton (12)', 'TD Banknorth Garden 18,624', '34–41']
SQL:

assistant: SELECT "Location Attendance" FROM "Table" WHERE "Date" = 'April 15';