Do you see either a black bird or zebra?
Yes, there is a black bird.
     src        edge_attr  dst
0      0  to the right of   19
1      1  to the right of    5
2      3   to the left of   23
3      4  to the right of   48
4      4   to the left of   26
..   ...              ...  ...
147   48   to the left of   26
148   49   to the left of   34
149   49  to the right of   44
150   50        flying in    2
151   50  to the right of   28

[152 rows x 3 columns]