What is the man riding on?
The man is riding on a motorcycle.
    src        edge_attr  dst
0     0        riding on   16
1     0      in front of    7
2     0   to the left of    6
3     0   to the left of    1
4     0  to the right of   22
..  ...              ...  ...
76   24               on   19
77   24   to the left of   19
78   24  to the right of   18
79   24  to the right of   20
80   24  to the right of   21

[81 rows x 3 columns]