Who is helping the child to the left of the skis?
The skier is helping the child.
     src       edge_attr  dst
0      0  to the left of    9
1      0  to the left of    7
2      0  to the left of   19
3      0  to the left of   13
4      0  to the left of    4
..   ...             ...  ...
115   21  to the left of    2
116   21  to the left of    6
117   21  to the left of    5
118   21  to the left of    9
119   21  to the left of   19

[120 rows x 3 columns]