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_15001681_1 (womens_doubles VARCHAR, year VARCHAR, womens_singles VARCHAR, mens_doubles VARCHAR)
  ### Question:
  In the year 2006, the womens singles had no competition and the mens doubles were roland hilti kilian pfister, what were the womens doubles
  ### Answer:
  SELECT womens_doubles FROM table_15001681_1 WHERE womens_singles = "no competition" AND mens_doubles = "Roland Hilti Kilian Pfister" AND year = 2006