Who is riding in the dark boat?
The man is riding in the boat.
    src        edge_attr  dst
0     0   to the left of   16
1     0  to the right of   13
2     0  to the right of   17
3     0  to the right of    8
4     0  to the right of    7
..  ...              ...  ...
77   17   to the left of    0
78   18   to the left of    1
79   19   to the left of    1
80   20   to the left of    1
81   21   to the left of   14

[82 rows x 3 columns]