Is there a steel fence or pot?
Yes, there is a steel fence.
    src        edge_attr  dst
0     4  to the right of   13
1     4  to the right of    5
2     4  to the right of   15
3     5   to the left of    6
4     5   to the left of    4
5     6  to the right of    5
6     7               in   14
7     7   to the left of   13
8     7   to the left of   15
9     8               on    9
10   13   to the left of   15
11   13  to the right of    7
12   13   to the left of    4
13   15   to the left of    4
14   15  to the right of   13
15   15  to the right of    7