Do you see any fences or trains there?
Yes, there is a train.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of    1
2     0  to the right of    5
3     0  to the right of    3
4     0  to the right of    4
5     1  to the right of    5
6     1   to the left of    8
7     1  to the right of    6
8     1   to the left of    0
9     1  to the right of   10
10    2  to the right of    8
11    3   to the left of    0
12    3   to the left of    7
13    4  to the right of   10
14    4   to the left of    0
15    5   to the left of    1
16    5   to the left of    0
17    6   to the left of    1
18    7  to the right of    3
19    8  to the right of   10
20    8   to the left of   11
21    8  to the right of    1
22    8   to the left of    2
23   10   to the left of    0
24   10   to the left of    4
25   10   to the left of    1
26   10   to the left of    8
27   11  to the right of    8