Who is walking?
The snowboarder is walking.
     src        edge_attr  dst
0      0   to the left of   12
1      0   to the left of   11
2      0   to the left of   15
3      0   to the left of   13
4      0   to the left of    6
..   ...              ...  ...
127   26   to the left of   23
128   26   to the left of    2
129   26  to the right of    7
130   27   to the left of   20
131   27               on   20

[132 rows x 3 columns]