CREATE TABLE table_70761 ("Class" CLOB, "Type" CLOB, "Names" CLOB, "Quantity made" CLOB, "Manufacturer" CLOB, "Date made" CLOB)

What is the class of the locomotive with a quantity made of 1 and a 0-6-0t type?
SELECT "Class" FROM table_70761 WHERE "Quantity made" = '1' AND "Type" = '0-6-0t'
SELECT "Class" FROM "table_70761" WHERE "Quantity made" = '1' AND "Type" = '0-6-0t'