What kind of vehicle is that pole behind of?
The pole is behind the train.
     src        edge_attr  dst
0      0   to the left of   14
1      0   to the left of   10
2      1   to the left of   17
3      1   to the left of   14
4      1   to the left of   23
..   ...              ...  ...
119   24  to the right of    7
120   25               on    8
121   25   to the left of   14
122   25  to the right of    7
123   26  to the right of    7

[124 rows x 3 columns]