What is in front of the vehicle that is in front of the car?
The window is in front of the bus.
     src        edge_attr  dst
0      0   to the left of    4
1      0   to the left of   20
2      0   to the left of    5
3      0  to the right of   21
4      0  to the right of   34
..   ...              ...  ...
181   34   to the left of    5
182   34   to the left of    0
183   34   to the left of   19
184   34   on the side of   29
185   34  to the right of   31

[186 rows x 3 columns]