What is the animal on the road?
The animal is a cow.
    src        edge_attr  dst
0     2   to the left of    4
1     3               on    9
2     3  to the right of   10
3     3               on    0
4     4  to the right of    2
5     6  to the right of   10
6     8               in    7
7    10       walking on    9
8    10       walking in    0
9    10   to the left of    3
10   10   to the left of    6
11   10       walking on    0
12   10               on    0