SELECT DISTINCT T1.PackageNumber FROM PACKAGE AS T1 JOIN Client AS T2 ON T1.Sender  =  T2.AccountNumber OR T1.Recipient  =  T2.AccountNumber WHERE T2.Name = "Leo Wong"
List all package sent or received by Leo Wong.
CREATE TABLE Employee (
  EmployeeID INTEGER PRIMARY KEY,
  Name VARCHAR(255) NOT NULL,
  Position VARCHAR(255) NOT NULL,
  Salary REAL NOT NULL,
  Remarks VARCHAR(255)
); 
CREATE TABLE Planet (
  PlanetID INTEGER PRIMARY KEY,
  Name VARCHAR(255) NOT NULL,
  Coordinates REAL NOT NULL
); 
CREATE TABLE Shipment (
  ShipmentID INTEGER PRIMARY KEY,
  Date DATE,
  Manager INTEGER NOT NULL,
  Planet INTEGER NOT NULL,
  FOREIGN KEY (Manager) REFERENCES Employee(EmployeeID),
  FOREIGN KEY (Planet) REFERENCES Planet(PlanetID)
) ;
CREATE TABLE Has_Clearance (
  Employee INTEGER NOT NULL,
  Planet INTEGER NOT NULL,
  Level INTEGER NOT NULL,
  PRIMARY KEY(Employee, Planet),
  FOREIGN KEY (Employee) REFERENCES Employee(EmployeeID),
  FOREIGN KEY (Planet) REFERENCES Planet(PlanetID)
) ; 
CREATE TABLE Client (
  AccountNumber INTEGER PRIMARY KEY,
  Name VARCHAR(255) NOT NULL
) ;
CREATE TABLE Package (
  Shipment INTEGER NOT NULL,
  PackageNumber INTEGER NOT NULL,
  Contents VARCHAR(255) NOT NULL,
  Weight REAL NOT NULL,
  Sender INTEGER NOT NULL,
  Recipient INTEGER NOT NULL,
  PRIMARY KEY(Shipment, PackageNumber),
  FOREIGN KEY (Shipment) REFERENCES Shipment(ShipmentID),
  FOREIGN KEY (Sender) REFERENCES Client(AccountNumber),
  FOREIGN KEY (Recipient) REFERENCES Client(AccountNumber)
) ;
INSERT INTO Client VALUES(1, 'Zapp Brannigan');
INSERT INTO Employee VALUES(1, 'Phillip J. Fry', 'Delivery boy', 7500.0, 'Not to be confused with the Philip J. Fry from Hovering Squid World 97a');
INSERT INTO Planet VALUES(1, 'Omicron Persei 8', 89475345.3545);
INSERT INTO Has_Clearance VALUES(1, 1, 2);
INSERT INTO Shipment VALUES(1, '3004/05/11', 1, 1);
INSERT INTO Package VALUES(1, 1, 'Undeclared', 1.5, 1, 2);