CREATE TABLE table_68814 ("Club" TEXT, "District" TEXT, "Area/Province" TEXT, "Stadium" TEXT, "First Season" TEXT, "Last Title" TEXT)

Name the last title for greater buenos aires and first season of 1920
SELECT "Last Title" FROM table_68814 WHERE "Area/Province" = 'greater buenos aires' AND "First Season" = '1920'
SELECT "Last Title" FROM "table_68814" WHERE "Area/Province" = 'greater buenos aires' AND "First Season" = '1920'