Are there zebras on the zoo?
Yes, there is a zebra on the zoo.
    src       edge_attr  dst
0     1  to the left of    8
1     1              on   13
2     1  to the left of    9
3     1  to the left of   12
4     2  to the left of   12
..  ...             ...  ...
61   12  to the left of    6
62   12  to the left of    8
63   12      walking on    0
64   12     standing in   14
65   12  to the left of   10

[66 rows x 3 columns]