How many categories for elapsed time exist for the $16.50 fixed-limit badugi game?
CREATE TABLE "2011_events" (
  "date" text,
  "event_num" text,
  "event" text,
  "winner" text,
  "prize" text,
  "entries" text,
  "prize_pool" text,
  "elapsed_time" text
);
SELECT COUNT("elapsed_time") FROM "2011_events" WHERE "event"='$16.50 Fixed-Limit Badugi';