//node[( @cat="np"
         or
         ( @lcat="np"
           and
           not(@rel=("hd","mwp"))
         )
         or
         ( @pt="n"
           and not(@rel="hd")
         )
         or
         ( @pt="vnw"
           and
           @pdtype="pron"
           and
           not(@rel="hd")
         )
         or
         ( @cat="mwu"
           and
           not(@rel="hd")
           and
           @rel=("su","obj1","obj2","app")
         )
       )
       or
       ( @cat="conj" and node[( @cat="np"
                                or
                                ( @lcat="np"
                                  and
                                  not(@rel=("hd","mwp"))
                                )
                                or
                                ( @pt="n"
                                  and not(@rel="hd")
                                )
                                or
                                ( @pt="vnw"
                                  and
                                  @pdtype="pron"
                                  and
                                  not(@rel="hd")
                                )
                                or
                                ( @cat="mwu"
                                  and
                                  not(@rel="hd")
                                  and
                                  @rel=("su","obj1","obj2","app")
                                )
                              )
         ]
       )
]