CREATE TABLE table_25581 ("Institution" TEXT, "Nickname" TEXT, "Location" TEXT, "Founded" FLOAT, "Type" TEXT, "Enrollment" FLOAT, "Joined" FLOAT, "Left" FLOAT)

Name the nickname that was founded 1798
SELECT "Nickname" FROM table_25581 WHERE "Founded" = '1798'
SELECT "Nickname" FROM "table_25581" WHERE "Founded" = '1798'