CREATE TABLE table_77489 ("Institution" TEXT, "Location" TEXT, "Founded" FLOAT, "Affiliation" TEXT, "Enrollment" FLOAT, "Nickname" TEXT)

What is Southern Illinois University Edwardsville's affiliation?
SELECT "Affiliation" FROM table_77489 WHERE "Institution" = 'southern illinois university edwardsville'
SELECT "Affiliation" FROM "table_77489" WHERE "Institution" = 'southern illinois university edwardsville'