CREATE TABLE table_13637 ("Stage" TEXT, "Winner" TEXT, "General classification" TEXT, "Points classification" TEXT, "Mountains classification" TEXT, "Young rider classification" TEXT)

What's the general classification of Ignatas Konovalovas when the mountains classification was Stefano Garzelli and points classification was Danilo Di Luca?
SELECT "General classification" FROM table_13637 WHERE "Mountains classification" = 'stefano garzelli' AND "Points classification" = 'danilo di luca' AND "Winner" = 'ignatas konovalovas'
SELECT "General classification" FROM "table_13637" WHERE "Mountains classification" = 'stefano garzelli' AND "Points classification" = 'danilo di luca' AND "Winner" = 'ignatas konovalovas'