What Hometown/School had a pick above 30, position of OF and team of Cleveland Indians?
CREATE TABLE "supplemental_first_round_selections" (
  "pick" real,
  "player" text,
  "team" text,
  "position" text,
  "hometown_school" text
);
SELECT "hometown_school" FROM "supplemental_first_round_selections" WHERE "pick">30 AND "position"='of' AND "team"='cleveland indians';