What team(s) did they play on april 23?
{'header': ['Game', 'Date', 'Team', 'Score', 'High points', 'High rebounds', 'High assists', 'Location Attendance', 'Record'], 'page_title': '2008–09 Boston Celtics season', 'page_id': '', 'types': ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-17140608-11', 'section_title': 'Game log', 'caption': 'Game log', 'rows': [['1', 'April 18', 'Chicago', 'L 103–105 (OT)', 'Rajon Rondo (29)', 'Rajon Rondo (9)', 'Rajon Rondo (7)', 'TD Banknorth Garden 18,624', '0–1'], ['2', 'April 20', 'Chicago', 'W 118–115 (OT)', 'Ray Allen (30)', 'Rajon Rondo , Kendrick Perkins (12)', 'Rajon Rondo (16)', 'TD Banknorth Garden 18,624', '1–1'], ['3', 'April 23', '@ Chicago', 'W 107–86 (OT)', 'Paul Pierce (24)', 'Rajon Rondo (11)', 'Glen Davis , Stephon Marbury (6)', 'United Center 23,072', '2–1'], ['4', 'April 26', '@ Chicago', 'L 118–121 (2OT)', 'Paul Pierce (29)', 'Glen Davis (12)', 'Rajon Rondo (11)', 'United Center 23,067', '2–2'], ['5', 'April 28', 'Chicago', 'W 106–104 (OT)', 'Rajon Rondo (28)', 'Kendrick Perkins (19)', 'Rajon Rondo (16)', 'TD Banknorth Garden 18,624', '3–2'], ['6', 'April 30', '@ Chicago', 'L 127–128 (3OT)', 'Ray Allen (51)', 'Kendrick Perkins (13)', 'Rajon Rondo (19)', 'United Center 23,430', '3–3']], 'name': 'table_17140608_11'}