CREATE TABLE table_11847 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

What is the time/retired of Driver Masten Gregory Carroll Shelby when the constructor was Maserati, the Grid was larger than 10 and there were more than 2 laps?
SELECT "Time/Retired" FROM table_11847 WHERE "Grid" > '10' AND "Laps" > '2' AND "Constructor" = 'maserati' AND "Driver" = 'masten gregory carroll shelby'
SELECT "Time/Retired" FROM "table_11847" WHERE "Constructor" = 'maserati' AND "Driver" = 'masten gregory carroll shelby' AND "Grid" > '10' AND "Laps" > '2'