CREATE TABLE "2006_nba_playoffs" (
  "game" real,
  "date" text,
  "team" text,
  "score" text,
  "high_points" text,
  "high_rebounds" text,
  "high_assists" text,
  "location_attendance" text,
  "series" text
);

Question: What was the series count at on May 23? 
SQL: SELECT "series" FROM "2006_nba_playoffs" WHERE "date"='May 23';