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