user: Question: What was the purpose of the Quay test blast?
Columns: ['Name', 'Location', 'Elevation + Height', 'Delivery', 'Purpose', 'Yield']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Otero', 'NTS Area 3q', 'metres (ft) - metres (ft)', 'underground shaft', 'one-point safety test', '38 tons']
SQL:

assistant: SELECT "Purpose" FROM "Table" WHERE "Name" = 'Quay';