user: Question: What are the polling dates when Larry O'Brien has 37%?
Columns: ['Polling Firm', 'Polling Dates', 'Bob Chiarelli', 'Alex Munter', "Larry O'Brien", 'Terry Kilrea (dropped out)']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Decima', '7–9 November 2006', '11%', '32%', '37%', '—']
SQL:

assistant: SELECT "Polling Dates" FROM "Table" WHERE "Larry O'Brien" = '37%';