What animal is on the sign?
The dog is on the sign.
    src        edge_attr  dst
0     0   to the left of    2
1     0  to the right of   13
2     0   to the left of    9
3     1   to the left of    3
4     1   to the left of   13
..  ...              ...  ...
63   13  to the right of    6
64   13   to the left of    9
65   13   to the left of    0
66   14   to the left of    9
67   15  to the right of    6

[68 rows x 3 columns]