CREATE TABLE table_76651 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" TEXT, "Time/Retired" TEXT, "Grid" TEXT)

How many laps did Valentino rossi have when riding a vehicle manufactured by yamaha?
SELECT "Laps" FROM table_76651 WHERE "Manufacturer" = 'yamaha' AND "Rider" = 'valentino rossi'
SELECT "Laps" FROM "table_76651" WHERE "Manufacturer" = 'yamaha' AND "Rider" = 'valentino rossi'