Are there any white coats?
No, there is a coat but it is black.
   src        edge_attr  dst
0    0  to the right of    3
1    1  to the right of    3
2    2          wearing    5
3    2          wearing    3
4    3   to the left of    7
5    3   to the left of    1
6    3   to the left of    0
7    6          wearing    4
8    6          wearing    0
9    7  to the right of    3