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_18602462_21 (quarterfinals VARCHAR, athlete VARCHAR)
  ### Question:
  When bas van erp was the athlete what was the quarterfinals?
  ### Answer:
  SELECT quarterfinals FROM table_18602462_21 WHERE athlete = "Bas van Erp"