Who is on the skateboard in the bottom part?
The guy is on the skateboard.
    src        edge_attr  dst
0     1   to the left of    3
1     1   to the left of    7
2     3  to the right of    1
3     6               on   10
4     7  to the right of    1
5     7  to the right of   12
6     9   to the left of   12
7    12   to the left of    7
8    12  to the right of    9
9    12  to the right of   13
10   13   to the left of   12