CREATE TABLE table_44666 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" TEXT, "Time/Retired" TEXT, "Grid" TEXT)

Who is the rider whose time/retired is accident?
SELECT "Rider" FROM table_44666 WHERE "Time/Retired" = 'accident'
SELECT "Rider" FROM "table_44666" WHERE "Time/Retired" = 'accident'