Which Paper Type has a Denomination of $0.50 and Date of Issue 4 February 2005?
CREATE TABLE "2005" (
  "date_of_issue" text,
  "denomination" text,
  "design" text,
  "paper_type" text,
  "first_day_cover_cancellation" text
);
SELECT "paper_type" FROM "2005" WHERE "denomination"='$0.50' AND "date_of_issue"='4 february 2005';