Who is riding a horse?
The cowboy is riding a horse.
     src        edge_attr  dst
0      0   to the left of   14
1      0  to the right of   10
2      0  to the right of   18
3      0   to the left of   17
4      0  to the right of    7
..   ...              ...  ...
98    21   to the left of    0
99    21   to the left of    6
100   21   to the left of   17
101   21   to the left of   14
102   21               on   20

[103 rows x 3 columns]