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 (class_to_1928 VARCHAR, year_s__of_manufacture VARCHAR, class_from_1928 VARCHAR)
  ### Question:
  Which class to 1928 value had years of manufacture of 1921/23 and class from 1928 of BCi-21?
  ### Answer:
  SELECT class_to_1928 FROM table_name_21 WHERE year_s__of_manufacture = "1921/23" AND class_from_1928 = "bci-21"