What were the Runners-up prior to 1990 when Ivan Lendl was Champion in the Seiko Super Tennis Tournament?
CREATE TABLE "singles_champions" (
  "year" real,
  "name_of_tournament" text,
  "champions" text,
  "runners_up" text,
  "score" text
);
SELECT "runners_up" FROM "singles_champions" WHERE "champions"='ivan lendl' AND "name_of_tournament"='seiko super tennis' AND "year"<1990;