what is the period if the player is Hashan Tillakaratne?
CREATE TABLE "most_dismissals_catches_plus_stumpings_i" (
  "rank" real,
  "dismissals" real,
  "catches" real,
  "stumps" real,
  "player" text,
  "period" text
);
SELECT "period" FROM "most_dismissals_catches_plus_stumpings_i" WHERE "player"='Hashan Tillakaratne';