What is in front of the van?
The fence is in front of the van.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of    6
2     1  to the right of   18
3     1               on   10
4     1   to the left of    8
..  ...              ...  ...
58   18   to the left of   17
59   19   to the left of    4
60   19  to the right of   10
61   19  to the right of   17
62   19   to the left of   13

[63 rows x 3 columns]