What kind of vehicle are the mountains behind of?
The mountains are behind the truck.
     src        edge_attr  dst
0      0   to the left of   28
1      0   to the left of   11
2      0   to the left of    1
3      0   to the left of   24
4      0   to the left of   27
..   ...              ...  ...
110   33  to the right of   16
111   33  to the right of   12
112   33   to the left of    7
113   33   to the left of   21
114   33  to the right of   20

[115 rows x 3 columns]