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

Question: Tell me the date with week of 13
SQL: SELECT "date" FROM "schedule" WHERE "week"=13;

Question: Tell me the average week for attendance of 48,113
SQL: SELECT AVG("week") FROM "schedule" WHERE "attendance"='48,113';