CREATE TABLE table_20915 ("Central Forest Reserve" CLOB, "Size in km\\u00b2" FLOAT, "Total plant species" FLOAT, "Tree species" FLOAT, "Endemic" FLOAT, "Threatened  ( CR , VU , EN ) " FLOAT)

What is the size of Itwara central forest reserve?
SELECT MIN("Size in km\u00b2") FROM table_20915 WHERE "Central Forest Reserve" = 'Itwara'
SELECT MIN("Size in km\u00b2") FROM "table_20915" WHERE "Central Forest Reserve" = 'Itwara'