Is there either a brown train or fence?
Yes, there is a brown train.
    src        edge_attr  dst
0     0  to the right of    1
1     0  to the right of    5
2     0   to the left of    8
3     1  to the right of    5
4     1   to the left of    8
5     1   to the left of    0
6     2   to the left of   13
7     2   to the left of    9
8     2   to the left of    5
9     3               on   12
10    3   to the left of    4
11    3   to the left of   13
12    4               of   13
13    4  to the right of   10
14    4   to the left of   11
15    4  to the right of    3
16    5   to the left of    1
17    5  to the right of    2
18    5   to the left of    8
19    5   to the left of    0
20    7   to the left of   11
21    8  to the right of    0
22    8  to the right of    1
23    8  to the right of    5
24    9  to the right of    2
25   10   to the left of    4
26   10   to the left of   13
27   11               of   12
28   11  to the right of    7
29   11               by   13
30   11  to the right of   13
31   11  to the right of    4
32   13  to the right of    3
33   13  to the right of    2
34   13   to the left of   11
35   13  to the right of   10