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_23050383_1 (kei VARCHAR, economic_incentive_regime VARCHAR)
  ### Question:
  How many KEI catagories are listed when the economic incentive regime is 2.56? 
  ### Answer:
  SELECT COUNT(kei) FROM table_23050383_1 WHERE economic_incentive_regime = "2.56"