Question: What kind of transaction type for the "HL Road Frame - Black, 48" order happened in 2012/12/13?
SQL: SELECT T1.TransactionType FROM TransactionHistory AS T1 INNER JOIN Product AS T2 ON T1.ProductID = T2.ProductID WHERE T2.Name = 'HL Road Frame - Black, 48' AND STRFTIME('%Y-%m-%d',T1.TransactionDate) = '2013-07-31'