What animal is gray?
The animal is a rhino.
    src        edge_attr  dst
0     0   to the left of    2
1     1   to the left of   10
2     1   to the left of    3
3     1   to the left of    8
4     2  to the right of    0
..  ...              ...  ...
81   14   to the left of    3
82   14   to the left of    8
83   14   to the left of    7
84   14   to the left of   11
85   14   to the left of   13

[86 rows x 3 columns]