CREATE TABLE table_56628 ("Driver" CLOB, "Constructor" CLOB, "Laps" FLOAT, "Time/Retired" CLOB, "Grid" FLOAT)

Who constructed the car with a grid larger than 20 that got in an accident?
SELECT "Constructor" FROM table_56628 WHERE "Grid" > '20' AND "Time/Retired" = 'accident'
SELECT "Constructor" FROM "table_56628" WHERE "Grid" > '20' AND "Time/Retired" = 'accident'