user: Question: What is the category for the year when brioude started and the stage is less than 7?
Columns: ['Year', 'Stage', 'Category', 'Start', 'Finish', 'Leader at the summit']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [2011.0, 9.0, 2.0, 'Issoire', 'St Flour', 'Thomas Voeckler']
SQL:

assistant: SELECT "Category" FROM "Table" WHERE "Start" = 'brioude' AND "Stage" < 7.0;