(H37 :ADJUNCT "earlier"
     :LOGICAL-SUBJECT (H5 / "company")
     / "announce"
     :ADJUNCT (H34 :LOGICAL-SUBJECT "it"
                   :MODAL WOULD
                   / "sell"
                   :LOGICAL-OBJECT (H22 / (H15 :ADJUNCT "its"
                                    :ADJUNCT "age"
                                    / "fleet")
                             :ADJUNCT (H21 :ANCHOR "of"
                                           / (H20 :ADJUNCT "Boeing"
                                                  :ADJUNCT "Co."
                                                  / "707s")))
                   :ADJUNCT (H29 :ANCHOR (H30 :PREMOD "because"
                                              / "of")
                                 / (H28 :ADJUNCT "increase"
                                        :ADJUNCT "maintenance"
                                        / "cost")))
     :PUNC PERIOD)