text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_11900773_6 (first_day_cover_cancellation VARCHAR, date_of_issue VARCHAR, theme VARCHAR)
  ### Question:
  Where is the first day cover cancellation for the 3 April 2008 IIHF World Championships, Quebec City stamp?
  ### Answer:
  SELECT first_day_cover_cancellation FROM table_11900773_6 WHERE date_of_issue = "3 April 2008" AND theme = "IIHF World Championships, Quebec City"