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 (year_built VARCHAR, class VARCHAR, number VARCHAR)
  ### Question:
  What year was the class 253 larger than 18 built?
  ### Answer:
  SELECT year_built FROM table_name_10 WHERE class = "class 253" AND number > 18