Do you see either any zebras or seagulls that are black?
Yes, the zebra is black.
     src        edge_attr  dst
0      0  to the right of   29
1      0   to the left of   16
2      0  to the right of   37
3      1  to the right of   29
4      1  to the right of   37
..   ...              ...  ...
266   41  to the right of   34
267   41  to the right of   32
268   41   to the left of   30
269   41  to the right of   29
270   41   to the left of   21

[271 rows x 3 columns]