What was the Score in the Final against Opponent in the Final Manuel Orantes, prior to 1978?
CREATE TABLE "singles_titles_16" (
  "outcome" text,
  "date" real,
  "championship" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score_in_the_final" text
);
SELECT "score_in_the_final" FROM "singles_titles_16" WHERE "date"<1978 AND "opponent_in_the_final"='manuel orantes';