What does the horse pull?
The horse pulls a cart.
    src        edge_attr  dst
0     0  to the right of   13
1     2   to the left of   18
2     2   to the left of   16
3     3     leaning over    4
4     3   to the left of   15
..  ...              ...  ...
57   18  to the right of   11
58   18  to the right of   15
59   18  to the right of    2
60   19  to the right of    6
61   19  to the right of   15

[62 rows x 3 columns]