What is the average rank for team cle when the BB/SO is 10.89?
CREATE TABLE "see_also" (
  "rank" real,
  "player" text,
  "team" text,
  "year" real,
  "bb_so" real
);
SELECT AVG("rank") FROM "see_also" WHERE "team"='cle' AND "bb_so"=10.89;