What is the powder on?
The powder is on the doughnut.
    src        edge_attr  dst
0     0  to the right of    5
1     1  to the right of    7
2     1               on    4
3     3               on    5
4     4  to the right of    6
5     4  to the right of    7
6     4             with    1
7     4               in    8
8     4  to the right of    5
9     5               in    8
10    5   to the left of    0
11    5   to the left of    4
12    6               on    7
13    6   to the left of    4
14    7   to the left of    4
15    7               in    8
16    7   to the left of    1