Task: Text to Code
Input (English): Step 1: For each row in Ref_Characteristic_Types table, find the corresponding rows in Characteristics table.
Step 2: find the number of rows of each value of Characteristics's characteristic_type_code in the results of step 1.
Step 3: find characteristic_type_description of step 1 results with largest value in the results of step 2
Output (English): SELECT T1.characteristic_type_description FROM Ref_Characteristic_Types AS T1 JOIN Characteristics AS T2 ON T1.characteristic_type_code = T2.characteristic_type_code GROUP BY T2.characteristic_type_code ORDER BY Count ( * ) Desc LIMIT 1