Is there any fence in the image?
No, there are no fences.
     src        edge_attr  dst
0      0  to the right of   22
1      0  to the right of   24
2      0  to the right of    8
3      0   to the left of   30
4      0   to the left of    5
..   ...              ...  ...
212   30   to the left of   10
213   30  to the right of    7
214   30               on   27
215   30  to the right of   23
216   30   to the left of   26

[217 rows x 3 columns]