What is the vehicle on the side walk?
The vehicle is a train.
     src        edge_attr  dst
0      0               on    8
1      0             near    9
2      1  to the right of   11
3      1  to the right of   13
4      1  to the right of   12
..   ...              ...  ...
97    18   to the left of   12
98    18   to the left of    1
99    18  to the right of    3
100   18  to the right of   17
101   18  to the right of   15

[102 rows x 3 columns]