Which color do you think the trees are?
The trees are brown.
    src        edge_attr  dst
0     1  to the right of    6
1     2  to the right of    6
2     3  to the right of    5
3     3   to the left of   14
4     4  to the right of    5
5     5   to the left of    3
6     5   to the left of    4
7     6   to the left of    1
8     6   to the left of    9
9     6  to the right of    8
10    6   to the left of    2
11    7   to the left of    9
12    7  to the right of   13
13    8   to the left of    6
14    9  to the right of    7
15    9  to the right of    6
16    9  to the right of   14
17   12               in   13
18   12  to the right of   13
19   13   to the left of   14
20   13   to the left of    7
21   13   to the left of   12
22   14           riding   12
23   14               on   12
24   14             with    8
25   14   to the left of    9
26   14  to the right of   13
27   14  to the right of    3