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_4 (prefix VARCHAR, chemical_class VARCHAR)
  ### Question:
  What prefix has Haloalkane as the chemical class?
  ### Answer:
  SELECT prefix FROM table_name_4 WHERE chemical_class = "haloalkane"