CREATE TABLE table_5851 ("Designation" CLOB, "Car numbers" CLOB, "Manufacturer" CLOB, "Model No." CLOB, "First used" CLOB, "Quantity" FLOAT)

Which Designation has a Manufacturer of siemens, and a Quantity of 52?
SELECT "Designation" FROM table_5851 WHERE "Manufacturer" = 'siemens' AND "Quantity" = '52'
SELECT "Designation" FROM "table_5851" WHERE "Manufacturer" = 'siemens' AND "Quantity" = '52'