Are there either fences or bells in the image?
Yes, there is a fence.
     src        edge_attr  dst
0      0   to the left of   16
1      1  to the right of   13
2      1   to the left of    8
3      1   to the left of   15
4      1   to the left of   14
..   ...              ...  ...
127   26   to the left of    7
128   26   to the left of    6
129   26  to the right of    4
130   26   to the left of   21
131   26  to the right of   20

[132 rows x 3 columns]