CREATE TABLE "schedule" (
  "week" text,
  "date" text,
  "opponent" text,
  "result" text,
  "game_site" text,
  "attendance" text
);

Question: where was the game site when the opponent was san diego chargers?
SQL: SELECT "game_site" FROM "schedule" WHERE "opponent"='san diego chargers';

Question: who was the opponent when the week was 9?
SQL: SELECT "opponent" FROM "schedule" WHERE "week"='9';