Is there a train in the picture?
Yes, there is a train.
    src        edge_attr  dst
0     0  to the right of   15
1     0  to the right of   11
2     0   to the left of   17
3     1  to the right of   17
4     1  to the right of   16
..  ...              ...  ...
84   20  to the right of    8
85   21   to the left of   12
86   22  to the right of    4
87   22  to the right of    3
88   22   to the left of    5

[89 rows x 3 columns]