CREATE TABLE table_5998 ("Stage" TEXT, "Winner" TEXT, "General classification" TEXT, "Points classification" TEXT, "Mountains classification" TEXT, "Combination classification" TEXT, "Team classification" TEXT)

Which Combination classification has Points classification of daniele bennati, and a Team classification of quick step?
SELECT "Combination classification" FROM table_5998 WHERE "Points classification" = 'daniele bennati' AND "Team classification" = 'quick step'
SELECT "Combination classification" FROM "table_5998" WHERE "Points classification" = 'daniele bennati' AND "Team classification" = 'quick step'