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_1682865_1 (introduction VARCHAR, numeral VARCHAR)
  ### Question:
  What date was the 6d introduced?
  ### Answer:
  SELECT introduction FROM table_1682865_1 WHERE numeral = "6d"