Is the horse to the left or to the right of the trailer?
The horse is to the right of the trailer.
    src        edge_attr  dst
0     0  to the right of   16
1     0   to the left of    2
2     0  to the right of   15
3     0  to the right of    6
4     0   to the left of   13
..  ...              ...  ...
78   19   to the left of    1
79   19  to the right of   17
80   19   to the left of   11
81   19  to the right of   16
82   19   to the left of   12

[83 rows x 3 columns]