What is the largest amount of floors in the 70m (233ft) Tupper building (educational)?
CREATE TABLE "buildings_completed_as_of_february_2011" (
  "rank" real,
  "building" text,
  "height" text,
  "floors" real,
  "completed" real
);
SELECT MAX("floors") FROM "buildings_completed_as_of_february_2011" WHERE "height"='70m (233ft)' AND "building"='tupper building (educational)';