What is on the pole?
The lamp post is on the pole.
    src        edge_attr  dst
0     0  to the right of    7
1     0   to the left of   20
2     0   to the left of    6
3     0   to the left of   10
4     0  to the right of   16
..  ...              ...  ...
72   22   to the left of    1
73   22   to the left of    8
74   22   to the left of    2
75   23  to the right of   22
76   23  to the right of   10

[77 rows x 3 columns]