What color are the numbers?
The numbers are blue.
    src        edge_attr  dst
0     0  to the right of    1
1     0   to the left of   11
2     1   to the left of    0
3     2  to the right of   13
4     2   to the left of   17
..  ...              ...  ...
68   25       walking in   14
69   26   to the left of   19
70   26   to the left of   11
71   26   to the left of   25
72   28   to the left of    5

[73 rows x 3 columns]