What animal is on the surfboard?
The dog is on the surfboard.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    3
2     0   to the left of   18
3     0   to the left of   14
4     1   to the left of    5
..  ...              ...  ...
77   18   to the left of   10
78   18   to the left of    7
79   18   to the left of    6
80   18  to the right of    0
81   18               of    3

[82 rows x 3 columns]