What is the dirt inside of?
The dirt is inside the forest.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    4
2     0  to the right of   15
3     2  to the right of   17
4     2  to the right of    9
5     2  to the right of    8
6     3  to the right of    4
7     3  to the right of   15
8     4   to the left of    0
9     4   to the left of   19
10    4   to the left of    3
11    6   to the left of    0
12    8   to the left of    2
13    8               of    3
14    9   to the left of    2
15   14               of    3
16   14  to the right of   15
17   15   to the left of    0
18   15           inside   13
19   15   to the left of   14
20   15   to the left of   19
21   15   to the left of    3
22   16          wearing    0
23   16      in front of   16
24   17   to the left of    2
25   19  to the right of    4
26   19  to the right of   15