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

Question: What was the earliest week the Titans played at Ford Field?
SQL: SELECT MIN("week") FROM "regular_season" WHERE "game_site"='ford field';

Question: When did the Titans play the Houston Texans at LP Field before Week 13?
SQL: SELECT "date" FROM "regular_season" WHERE "week"<13 AND "game_site"='lp field' AND "opponent"='houston texans';