Is there either a white horse or sheep?
Yes, there is a white horse.
    src        edge_attr  dst
0     0         carrying   17
1     0  to the right of    4
2     0  to the right of    3
3     0  to the right of   13
4     0  to the right of    8
..  ...              ...  ...
67   17  to the right of   19
68   19   to the left of   17
69   19   to the left of    1
70   19   to the left of   15
71   20  to the right of   16

[72 rows x 3 columns]