Is the red bus to the right or to the left of the brown horse?
The bus is to the left of the horse.
     src        edge_attr  dst
0      0  to the right of   21
1      0   to the left of   18
2      0   to the left of   10
3      0   to the left of    5
4      0  to the right of   15
..   ...              ...  ...
160   32  to the right of   14
161   32  to the right of   21
162   32   to the left of   24
163   32  to the right of   26
164   32  to the right of   27

[165 rows x 3 columns]