user: ### NOW ANSWER:
Question: What is the qual 2 when the best is 1:45.172?
Columns: ['Name', 'Team', 'Qual 1', 'Qual 2', 'Best']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Sébastien Bourdais', 'Newman/Haas Racing', '1:44.637', '1:43.046', '1:43.046']
SQL:

assistant: SELECT "Qual 2" FROM "Table" WHERE "Best" = '1:45.172';