What American Southwest Conference school was founded in 1883?
CREATE TABLE "former_members" (
  "institution" text,
  "location" text,
  "men_s_nickname" text,
  "women_s_nickname" text,
  "founded" real,
  "type" text,
  "enrollment" real,
  "joined" text,
  "left" text,
  "current_conference" text,
  "classification" text
);
SELECT "institution" FROM "former_members" WHERE "founded">1883 AND "current_conference"='american southwest';