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_50 (year VARCHAR, tournament VARCHAR)
  ### Question:
  What is the total number of Year(s), when Tournament is "World Championships"?
  ### Answer:
  SELECT COUNT(year) FROM table_name_50 WHERE tournament = "world championships"