What is the gray elephant doing?
The elephant is lying.
    src        edge_attr  dst
0     0               on   10
1     0   to the left of   16
2     0  to the right of    8
3     0   to the left of   21
4     0   to the left of    2
..  ...              ...  ...
73   21  to the right of    9
74   21  to the right of   10
75   21  to the right of    8
76   21  to the right of    0
77   21  to the right of   20

[78 rows x 3 columns]