Is the car to the right or to the left of the bus?
The car is to the right of the bus.
     src        edge_attr  dst
0      0  to the right of    6
1      0  to the right of   16
2      0   to the left of   23
3      0   to the left of   15
4      0   to the left of   25
..   ...              ...  ...
147   27  to the right of   14
148   27   to the left of   16
149   27   to the left of    6
150   27   to the left of   24
151   27   to the left of   18

[152 rows x 3 columns]