Where is the train?
The train is on the street.
    src        edge_attr  dst
0     0   parked next to   19
1     0  to the right of    1
2     0  to the right of    9
3     0        parked at   19
4     1  to the right of    2
..  ...              ...  ...
77   19  to the right of   13
78   19  to the right of   10
79   20  to the right of   10
80   20  to the right of   18
81   20   to the left of   15

[82 rows x 3 columns]