What color is the zebra that is not old?
The zebra is white.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of    9
2     1  to the right of   15
3     1           eating    3
4     1  to the right of    0
..  ...              ...  ...
60   16  to the right of    8
61   17   to the left of    9
62   17   to the left of    1
63   17   to the left of   12
64   17   to the left of    2

[65 rows x 3 columns]