Annotated GraphViz code for https://medium.com/p/d6c4c234c4ee

identical_nodes.gv

digraph sameaddress {

  ///////////////////////////////////////
  // Global setup
  ///////////////////////////////////////

  node [shape=record];
  rankdir=LR;
//ranksep=1;
  nodesep=0.5;
  splines=polyline;

  ///////////////////////////////////////
  // Node list
  ///////////////////////////////////////

  logan    [label="PERSON|Logan"        ];
  kilgore  [label="PERSON|Kilgore"      ];
  sn1      [label="STREET_NUMBER|27"    ];
  sn2      [label="STREET_NUMBER|27"    ];
  unit1    [label="UNIT|Apt 7A"         ];
  unit2    [label="UNIT|Apt 7A"         ];
  street1  [label="STREET|Cake street"  ];
  street2  [label="STREET|Cake street"  ];
  city1    [label="CITY|Isalie"         ];
  city2    [label="CITY|Mabase"         ];
  county   [label="COUNTY|Lassen"       ];

  ///////////////////////////////////////
  // Adding edges
  ///////////////////////////////////////

  logan -> unit1 [label="rents"               ];
  unit1 -> logan [label="address_of"          ];
  unit1 -> logan [label="primary_address_of"  ];

  unit1   -> kilgore  [headlabel="primary_address_of", labeldistance=7,labelangle=7  ];
  unit1   -> kilgore  [label="address_of" ];
  kilgore -> unit2    [label="owns"       ];
  unit2   -> kilgore  [label="address_of" ];

  unit1 -> sn1 [label="unit_of"];
  unit2 -> sn2 [label="unit_of"];

  sn1 -> street1 [label="street_number_on"];
  sn2 -> street2 [label="street_number_on"];

  street1 -> city1 [label="street_in"];
  street2 -> city2 [label="street_in"];

  city1 -> county [label="city_in"];
  city2 -> county [label="city_in"];

  ///////////////////////////////////////
  // Anonym subgraph to enforce ordering
  ///////////////////////////////////////

  {
    node [style="invis"];
    edge [style="invis"];

    A -> B -> C;

    {rank=same;  A;  kilgore;  logan;    }
    {rank=same;  B;  unit1;    unit2;    }
    {rank=same;  C;  street1;  street2;  }
  }
}