Is there sand or grass that is not brown?
No, there is grass but it is brown.
    src        edge_attr  dst
0     0   to the left of    3
1     0  to the right of   10
2     0   to the left of   12
3     1  to the right of   16
4     1  to the right of    7
5     2  to the right of    8
6     3  to the right of    0
7     3  to the right of   11
8     3  to the right of    6
9     3             near    4
10    3  to the right of   10
11    4  to the right of    6
12    4  to the right of   12
13    4             near    3
14    4  to the right of   14
15    4  to the right of   13
16    4  to the right of   15
17    4  to the right of   17
18    5  to the right of   10
19    6   to the left of   13
20    6  to the right of   10
21    6   to the left of   12
22    6   to the left of    3
23    6   to the left of    4
24    6               on    9
25    7   to the left of    1
26    8   to the left of    2
27    8   to the left of    9
28    9  to the right of   16
29    9  to the right of    8
30    9  to the right of   10
31   10   to the left of   11
32   10   to the left of    6
33   10   to the left of    5
34   10  to the right of   16
35   10   to the left of    9
36   10   to the left of   12
37   10   to the left of    0
38   10   to the left of    3
39   11  to the right of   10
40   11   to the left of    3
41   12  to the right of   17
42   12  to the right of    0
43   12  to the right of    6
44   12  to the right of   14
45   12  to the right of   10
46   12   to the left of    4
47   13   to the left of    4
48   13  to the right of    6
49   13  to the right of   17
50   14   to the left of    4
51   14   to the left of   12
52   15   to the left of    4
53   16   to the left of    9
54   16   to the left of    1
55   16   to the left of   10
56   17   to the left of   13
57   17   to the left of   12
58   17   to the left of    4