Database: planet_1
Question: Count the number of packages sent by Ogden Wernstrom and received by Leo Wong.
SQL:
SELECT T1.PackageNumber FROM PACKAGE AS T1 JOIN Client AS T2 ON T1.Sender  =  T2.AccountNumber WHERE T2.Name = "Ogden Wernstrom" INTERSECT SELECT T1.PackageNumber FROM PACKAGE AS T1 JOIN Client AS T2 ON T1.Recipient  =  T2.AccountNumber WHERE T2.Name = "Leo Wong"