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 Attribute_Definitions (attribute_data_type VARCHAR)
### Question:
Find the list of attribute data types possessed by more than 3 attribute definitions.
### Answer:
SELECT attribute_data_type FROM Attribute_Definitions GROUP BY attribute_data_type HAVING COUNT(*) > 3