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_19 (railway_number_s_ VARCHAR, quantity VARCHAR)
  ### Question:
  Which railway number has 3 quantity?
  ### Answer:
  SELECT railway_number_s_ FROM table_name_19 WHERE quantity = 3