What is the sign on the pole?
The sign is a street sign.
    src       edge_attr  dst
0     0  to the left of    7
1     0  to the left of   14
2     0              on   14
3     0  to the left of   17
4     0  to the left of    2
..  ...             ...  ...
81   18  to the left of    9
82   18  to the left of   12
83   18  to the left of   11
84   18  to the left of   15
85   18  to the left of   14

[86 rows x 3 columns]