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_10 (lead_envoy VARCHAR, year VARCHAR, ryūkyūan_king VARCHAR, mission_type VARCHAR)
  ### Question:
  Who was the lead envoy of the congratulation mission in 1718 with the Ryūkyūan King shō kei?
  ### Answer:
  SELECT lead_envoy FROM table_name_10 WHERE ryūkyūan_king = "shō kei" AND mission_type = "congratulation" AND year = 1718