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

Question: what week number was at memorial stadium?
SQL: SELECT AVG("week") FROM "schedule" WHERE "game_site"='memorial stadium';

Question: before week 12 what was the attendance on 1983-11-21?
SQL: SELECT SUM("attendance") FROM "schedule" WHERE "date"='1983-11-21' AND "week"<12;

Question: on week 16, what was the lowest attendance?
SQL: SELECT MIN("attendance") FROM "schedule" WHERE "week"=16;