user: Question: How many stages were there where the winner and the points classification were Alberto Contador?
Columns: ['Stage', 'Winner', 'General classification', 'Points classification', 'Mountains classification', 'Combination classification', 'Team classification']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Liquigas', 'Filippo Pozzato', 'not awarded', 'not awarded', 'not awarded', 'Liquigas']
SQL:

assistant: SELECT COUNT("Stage") FROM "Table" WHERE "Winner" = 'Alberto Contador' AND "Points classification" = 'Alberto Contador';