Are there trucks behind the hydrant?
No, there is a bus behind the hydrant.
    src        edge_attr  dst
0     0           behind    8
1     0  to the right of    7
2     0  to the right of    8
3     0      in front of    6
4     0  to the right of   12
..  ...              ...  ...
63   14   on the side of    0
64   15          next to   16
65   15             near   16
66   15   to the left of    8
67   16             near   15

[68 rows x 3 columns]