What was the college team of the player whose former WNBA team was the Cleveland Rockers?
CREATE TABLE "expansion_draft_selections" (
  "pick" real,
  "player" text,
  "nationality" text,
  "new_wnba_team" text,
  "former_wnba_team" text,
  "college_country_team" text
);
SELECT "college_country_team" FROM "expansion_draft_selections" WHERE "former_wnba_team"='cleveland rockers';