Are there either any elephants or fences?
Yes, there is an elephant.
     src        edge_attr  dst
0      0  to the right of   33
1      0   to the left of   31
2      0   to the left of    1
3      0   to the left of    8
4      0   to the left of   37
..   ...              ...  ...
414   41  to the right of    2
415   41   to the left of   36
416   41  to the right of   21
417   41  to the right of   27
418   41  to the right of   13

[419 rows x 3 columns]