Are there either any elephants or horses?
Yes, there is a horse.
    src        edge_attr  dst
0     0  to the right of   19
1     0  to the right of   10
2     0  to the right of    4
3     0  to the right of    3
4     0  to the right of    7
..  ...              ...  ...
75   19  to the right of   16
76   19   to the left of   12
77   19   to the left of    4
78   19  to the right of   18
79   19   to the left of   10

[80 rows x 3 columns]