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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def recall():
 """RECALL Section 9.3.18a"""

    a = TpPd(pd=0x3)
    b = MessageType(mesType=0xb)  # 00001011
    c = RecallType()
    d = Facility()
    packet = a / b / c / d
    return packet