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

Question: What is the game site of the game with the san diego chargers as the opponent?
SQL: SELECT "game_site" FROM "schedule" WHERE "opponent"='san diego chargers';