What animal is black?
The animal is a dog.
    src        edge_attr  dst
0     0               on   12
1     0  to the right of   13
2     0  to the right of    4
3     0  to the right of   20
4     0  to the right of   21
..  ...              ...  ...
92   21   to the left of    7
93   21   to the left of    6
94   21   to the left of    0
95   21   to the left of   11
96   21   to the left of   10

[97 rows x 3 columns]