user: Question: What category was in 1964?
Columns: ['Year', 'Stage', 'Category', 'Start', 'Finish', 'Leader at the summit']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2013.0, '9', '1', 'Saint-Girons', 'Bagnères-de-Bigorre', 'Thomas De Gendt ( BEL )']
SQL:

assistant: SELECT "Category" FROM "Table" WHERE "Year" = 1964.0;