Is there either a dog or a cat?
No, there are no dogs or cats.
     src        edge_attr  dst
0      0   to the left of    8
1      0   to the left of    5
2      0  to the right of   34
3      0  to the right of   35
4      0  to the right of    3
..   ...              ...  ...
290   35   to the left of    0
291   35  to the right of   30
292   35  to the right of   31
293   35               on   33
294   35   to the left of   29

[295 rows x 3 columns]