What are the vehicles that are to the left of the person near the pole?
The vehicles are trucks.
     src        edge_attr  dst
0      0  to the right of   16
1      0  to the right of    3
2      0  to the right of    5
3      0   to the left of    4
4      0  to the right of    2
..   ...              ...  ...
171   26   to the left of    0
172   26  to the right of    8
173   26  to the right of   16
174   26  to the right of   10
175   27   to the left of   21

[176 rows x 3 columns]