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_63 (formula VARCHAR, refractive_index_es__5893nm VARCHAR)
  ### Question:
  Which formula has a refractive index 589.3 at 1.97?
  ### Answer:
  SELECT formula FROM table_name_63 WHERE refractive_index_es__5893nm = "1.97"