Is there a helmet that is black?
No, there is a helmet but it is red.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of   21
2     2         watching   13
3     2   to the left of    4
4     2   to the left of    8
..  ...              ...  ...
73   18  to the right of    4
74   19   to the left of   15
75   21  to the right of   16
76   21  to the right of    0
77   21  to the right of    3

[78 rows x 3 columns]