CREATE TABLE table_37615 ("Length/Fuel" CLOB, "Model" CLOB, "Year Built" CLOB, "Quantity" FLOAT, "Floor Styling" CLOB, "Wheelchair access" CLOB)

What is the Length/Fuel of the bus with a Quantity of 30?
SELECT "Length/Fuel" FROM table_37615 WHERE "Quantity" = '30'
SELECT "Length/Fuel" FROM "table_37615" WHERE "Quantity" = '30'