CREATE TABLE table_15896 ("Name" CLOB, "Canton" CLOB, "Height  ( meters ) " FLOAT, "Crest length  ( meters ) " FLOAT, "Type" CLOB, "Year of construction" FLOAT, "Name of the Lake" CLOB)

What is year of construction of spitallamm?
SELECT MIN("Year of construction") FROM table_15896 WHERE "Name" = 'Spitallamm'
SELECT MIN("Year of construction") FROM "table_15896" WHERE "Name" = 'Spitallamm'