Is the metal fence on the right?
Yes, the fence is on the right of the image.
    src        edge_attr  dst
0     0  to the right of    2
1     0   to the left of   12
2     1   to the left of    6
3     1  to the right of    2
4     1               in    4
5     2   to the left of    1
6     2   to the left of    0
7     2   to the left of    7
8     3  to the right of   11
9     3  to the right of   10
10    3  to the right of    6
11    3   on the side of   11
12    6  to the right of    1
13    6   to the left of    3
14    6  to the right of    7
15    7   to the left of    6
16    7  to the right of    2
17   10   to the left of    3
18   10   to the left of   12
19   11   to the left of    3
20   12  to the right of   10
21   12  to the right of    0