CREATE TABLE table_26149 ("Copper Age" TEXT, "Chalcolithic  ( 4500 BC - 3300 BC ) " TEXT, "Early Chalcolithic" TEXT, "4500 BC - 4000 BC" TEXT, "Ubaid period in Mesopotamia" TEXT)

When hittite old kingdom , minoan eruption is the ubaid period in mesopotamia what is the copper age?
SELECT "Copper Age" FROM table_26149 WHERE "Ubaid period in Mesopotamia" = 'Hittite Old Kingdom , Minoan eruption'
SELECT "Copper Age" FROM "table_26149" WHERE "Ubaid period in Mesopotamia" = 'Hittite Old Kingdom , Minoan eruption'