Is the giraffe to the right of a zebra?
No, the giraffe is to the right of a fence.
    src        edge_attr  dst
0     0  to the right of   14
1     0   to the left of   11
2     0  to the right of    7
3     0  to the right of    6
4     0   to the left of   10
..  ...              ...  ...
67   14   to the left of    0
68   14   to the left of    2
69   15  to the right of    4
70   15  to the right of    7
71   15  to the right of   13

[72 rows x 3 columns]