Which School/Club Team has a Round larger than 3, and a Player of sammy okpro?
CREATE TABLE "cfl_draft" (
  "round" real,
  "pick" text,
  "player" text,
  "position" text,
  "school_club_team" text
);
SELECT "school_club_team" FROM "cfl_draft" WHERE "round">3 AND "player"='sammy okpro';