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_99 (category VARCHAR, year VARCHAR, nominated_work VARCHAR)
  ### Question:
  What categories had a Nominated work of yerma before 1992?
  ### Answer:
  SELECT category FROM table_name_99 WHERE year < 1992 AND nominated_work = "yerma"