What was the result of the game against San Francisco 49ers before week 16?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "game_site" text,
  "record" text,
  "attendance" text
);
SELECT "result" FROM "schedule" WHERE "week"<16 AND "opponent"='san francisco 49ers';