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_name_68 (a_dyck VARCHAR, j_thiessen VARCHAR)
  ### Question:
  Which of the A. Dyck has J. Thiessen of Du?
  ### Answer:
  SELECT a_dyck FROM table_name_68 WHERE j_thiessen = "du"