Is there a horse in this picture that is not walking?
Yes, there is a horse that is running.
    src        edge_attr  dst
0     1  to the right of    2
1     1  to the right of    3
2     2  to the right of    3
3     2               on    4
4     2   to the left of    1
5     3               on    4
6     3   to the left of    1
7     3   to the left of    5
8     3   to the left of    2
9     5  to the right of    3
10    5               on    4