Who is the animal on the snow pulling?
The dog is pulling the man.
    src        edge_attr  dst
0     0  to the right of    9
1     0               in    3
2     1   to the left of    2
3     2               on    9
4     2               on    3
5     2  to the right of    1
6     2          pulling   10
7     3   to the left of    4
8     4  to the right of    3
9     4               of   10
10    9   to the left of    0
11   10             with    2
12   10          wearing    8
13   10        pulled by    2
14   10          wearing    1
15   11               of   12