Who is standing?
The guy is standing.
    src        edge_attr  dst
0     0  to the right of    1
1     1               by    5
2     1   to the left of    0
3     1   to the left of    7
4     2  to the right of    4
5     3               on    5
6     4   to the left of    2
7     4   to the left of    9
8     7  to the right of    1
9     9  to the right of    4
10    9      standing on    3
11    9               on    3