Is there either any brown grass or sand?
Yes, there is brown grass.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    5
2     3   to the left of    5
3     3   to the left of   13
4     5   to the left of   10
5     5  to the right of    3
6     5   to the left of    0
7     6   to the left of    9
8     6  to the right of    7
9     7   to the left of    9
10    7   to the left of    6
11    8   to the left of    0
12    8   to the left of   10
13    9  to the right of    6
14    9  to the right of    7
15   10  to the right of   13
16   10  to the right of    5
17   10  to the right of    8
18   12        on top of    2
19   13      standing in   12
20   13               by   11
21   13   to the left of   10
22   13  to the right of    3
23   13      standing on   12