user: Question: Which points classification has 4 as the stage?
Columns: ['Stage', 'Stage winner', 'General classification', 'Points classification', 'Mountains classification', 'Malaysian rider classification', 'Team classification', 'Malaysian team classification']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Makoto Iijima', 'Makoto Iijima', 'Ahmad Haidar Anuawar', 'Makoto Iijima', 'Ahmad Haidar Anuawar', 'Azad University Iran', 'MNCF Continental Team']
SQL:

assistant: SELECT "Points classification" FROM "Table" WHERE "Stage" = 4.0;