Which round has a Kick Off of 1993-02-17 20:30?
CREATE TABLE "1992_93_ue_lleida_season" (
  "round" text,
  "kick_off" text,
  "opponents" text,
  "h_a" text,
  "result" text,
  "referee" text
);
SELECT "round" FROM "1992_93_ue_lleida_season" WHERE "kick_off"='1993-02-17 20:30';