Who is skating?
The men are skating.
    src        edge_attr  dst
0     0   to the left of   10
1     0  to the right of    3
2     0  to the right of    2
3     0  to the right of    1
4     0  to the right of   13
5     0   to the left of    7
6     1   to the left of    0
7     2   to the left of    0
8     2               on    1
9     3   to the left of   18
10    3   to the left of    0
11    3  to the right of   15
12    4   to the left of   14
13    5   to the left of    9
14    7  to the right of    0
15    7               on   12
16    7  to the right of   13
17    7  to the right of   18
18    9  to the right of    5
19   10  to the right of    0
20   10  to the right of   18
21   11         watching    0
22   13   to the left of    7
23   13   to the left of    0
24   13  to the right of   15
25   13   to the left of   18
26   14  to the right of    4
27   15   to the left of   13
28   15   to the left of    3
29   18   to the left of    7
30   18  to the right of   13
31   18  to the right of    3
32   18   to the left of   10