CREATE TABLE "regular_season" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "game_site" text,
  "record" text,
  "attendance" real
);

Question: What is the highest Week with the Opponent Buffalo Bills?
SQL: SELECT MAX("week") FROM "regular_season" WHERE "opponent"='buffalo bills';

Question: Which Opponent has an Attendance greater than 14,431 during Week 3 at Bears Stadium Game site?
SQL: SELECT "opponent" FROM "regular_season" WHERE "attendance">'14,431' AND "game_site"='bears stadium' AND "week"=3;