Are there any cows or sheep that are not white?
No, there is a cow but it is white.
    src        edge_attr  dst
0     0               by    9
1     2   to the left of   18
2     2   to the left of   11
3     2   to the left of    3
4     3  to the right of    2
..  ...              ...  ...
93   32  to the right of    8
94   32  to the right of   11
95   33   to the left of   16
96   33   to the left of   27
97   34   to the left of   18

[98 rows x 3 columns]