Is there any sand or grass that is not brown?
No, there is grass but it is brown.
    src        edge_attr  dst
0     0               on    5
1     0   to the left of    8
2     0   to the left of   13
3     0   to the left of   10
4     1  to the right of    5
5     2               on    3
6     2      in front of    4
7     4           behind    2
8     5         lying on    3
9     5   to the left of   12
10    5   to the left of   13
11    5  to the right of   16
12    5   to the left of    8
13    5   to the left of    7
14    5   to the left of    1
15    5   to the left of   10
16    5   to the left of    9
17    7  to the right of    5
18    8  to the right of    5
19    8  to the right of    0
20    9  to the right of    5
21    9  to the right of   15
22   10           flying    5
23   10               in    2
24   10  to the right of    0
25   10  to the right of    5
26   10          wearing    9
27   10          wearing    7
28   10          wearing    8
29   10          wearing   13
30   10          holding    5
31   12  to the right of    5
32   13  to the right of    0
33   13  to the right of    5
34   15   to the left of    9
35   15               in    2
36   16   to the left of    5