CREATE TABLE table_203_263 (id DECIMAL, "alumni chapters and clubs" TEXT, "location" TEXT, "founding date" TEXT, "years active" TEXT, "province" TEXT)

which delta omicron chapter was founded before zeta beta ?
SELECT "alumni chapters and clubs" FROM table_203_263 WHERE id = (SELECT id FROM table_203_263 WHERE "alumni chapters and clubs" = 'zeta beta') - 1
SELECT "alumni chapters and clubs" FROM "table_203_263" WHERE "id" = (SELECT "id" FROM "table_203_263" WHERE "alumni chapters and clubs" = 'zeta beta') - 1