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