Is the car to the right of a van?
No, the car is to the left of a van.
     src        edge_attr  dst
0      0   to the left of   13
1      0  to the right of   15
2      0   to the left of   17
3      0   to the left of    1
4      0  to the right of    4
..   ...              ...  ...
96    17   to the left of    2
97    17  to the right of    4
98    17   to the left of    8
99    17  to the right of   14
100   17  to the right of   15

[101 rows x 3 columns]