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_21 (silver VARCHAR, year VARCHAR, gold VARCHAR)
  ### Question:
  Who won silver in the year before 2010, the year Chan Ming Shu won gold?
  ### Answer:
  SELECT silver FROM table_name_21 WHERE year < 2010 AND gold = "chan ming shu"