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 Ref_Transaction_Types (transaction_type_description VARCHAR, transaction_type_code VARCHAR)
### Question:
Show the description of transaction type with code "PUR".
### Answer:
SELECT transaction_type_description FROM Ref_Transaction_Types WHERE transaction_type_code = "PUR"