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_16 (opponent VARCHAR, round VARCHAR, rules VARCHAR)
  ### Question:
  Which Opponent has a Round of 4, and a Rules of thai boxing?
  ### Answer:
  SELECT opponent FROM table_name_16 WHERE round = "4" AND rules = "thai boxing"