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_12164707_1 (mixed_doubles VARCHAR, mens_singles VARCHAR)
  ### Question:
  How many Mixed Doubles won when Oliver Pongratz won the Men's Singles?
  ### Answer:
  SELECT COUNT(mixed_doubles) FROM table_12164707_1 WHERE mens_singles = "Oliver Pongratz"