What animal is black?
The animal is a cow.
    src        edge_attr  dst
0     0   to the left of   18
1     0   to the left of   12
2     2   to the left of    9
3     2   to the left of    8
4     2   to the left of   15
..  ...              ...  ...
69   21  to the right of   12
70   21  to the right of    2
71   21  to the right of   13
72   21  to the right of   14
73   21  to the right of   16

[74 rows x 3 columns]