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

Question: What is the number of weeks where the venue was memorial stadium and the attendance was less than 41,252?
SQL: SELECT COUNT("week") FROM "schedule" WHERE "venue"='memorial stadium' AND "attendance"<'41,252';

Question: What is the sum of the weeks that games occured on october 21, 1974 and less than 50,623 fans attended?
SQL: SELECT SUM("week") FROM "schedule" WHERE "date"='october 21, 1974' AND "attendance"<'50,623';