Is the fence in the top of the image?
No, the fence is in the bottom of the image.
    src        edge_attr  dst
0     0               on    7
1     0  to the right of    7
2     1  to the right of    4
3     1  to the right of    8
4     1  to the right of    7
5     1  to the right of    5
6     1           behind    8
7     3               on    7
8     4  to the right of    7
9     4  to the right of    6
10    4   to the left of    1
11    5   to the left of    1
12    5  to the right of    7
13    6               on    4
14    6   to the left of    4
15    7   to the left of    0
16    7   to the left of    4
17    7   to the left of    1
18    7   to the left of    5
19    8   to the left of    1
20    8      in front of    1