Is there a train or a bus in this image?
Yes, there is a bus.
    src        edge_attr  dst
0     0  to the right of   18
1     0  to the right of   11
2     0  to the right of   23
3     0  to the right of   19
4     2   to the left of   20
..  ...              ...  ...
92   24   to the left of   22
93   25   to the left of   21
94   25  to the right of   17
95   25  to the right of   12
96   25  to the right of    8

[97 rows x 3 columns]