Who was the conference player of the year when Alabama State was the tournament winner?
CREATE TABLE "table1_28884880_4" (
  "conference" text,
  "regular_season_winner" text,
  "conference_player_of_the_year" text,
  "conference_tournament" text,
  "tournament_venue_city" text,
  "tournament_winner" text
);
SELECT "conference_player_of_the_year" FROM "table1_28884880_4" WHERE "tournament_winner"='Alabama State';