What is the credit card number for Michelle E Cox?
credit card number refers to CreditCardID
SELECT T3.CreditCardID FROM Person AS T1 INNER JOIN PersonCreditCard AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID INNER JOIN CreditCard AS T3 ON T2.CreditCardID = T3.CreditCardID WHERE T1.FirstName = 'Michelle' AND T1.MiddleName = 'E' AND T1.LastName = 'Cox'