Who was the artist that had $49.95 as the issue price for the 2010 year?
CREATE TABLE "specimen_set_editions" (
  "year" real,
  "theme" text,
  "artist" text,
  "mintage" real,
  "issue_price" text
);
SELECT "artist" FROM "specimen_set_editions" WHERE "issue_price"='$49.95' AND "year"=2010;