What kind of vehicle is to the right of the people that are holding the bag?
The vehicle is a train.
    src        edge_attr  dst
0     0   to the left of   15
1     0   to the left of   12
2     0   to the left of    6
3     0   to the left of    4
4     1   to the left of    3
..  ...              ...  ...
67   18      standing on    0
68   18   to the left of    3
69   18  to the right of   16
70   18  to the right of   14
71   18   to the left of   11

[72 rows x 3 columns]