Are there both sand and grass in the picture?
Yes, there are both grass and sand.
    src        edge_attr  dst
0     1  to the right of    3
1     1  to the right of   16
2     3   to the left of   13
3     3               in    2
4     3   to the left of    1
5     4   to the left of   15
6     6  to the right of   16
7     7   to the left of   21
8     7  to the right of   13
9     7   to the left of   22
10    7  to the right of   11
11    8   to the left of   11
12    9   to the left of   14
13    9   to the left of   25
14   10   to the left of   17
15   10   to the left of   19
16   11   to the left of    7
17   11  to the right of    8
18   13  to the right of    3
19   13   to the left of    7
20   14   to the left of   23
21   14  to the right of   24
22   14  to the right of   25
23   14  to the right of   17
24   14  to the right of    9
25   15  to the right of    4
26   16   to the left of    1
27   16   to the left of    6
28   17  to the right of   18
29   17   to the left of   14
30   17  to the right of   10
31   17   to the left of   25
32   18   to the left of   17
33   19  to the right of   10
34   19   to the left of   20
35   20  to the right of   19
36   21  to the right of    7
37   22  to the right of    7
38   23  to the right of   14
39   23  to the right of   25
40   23  to the right of   24
41   24   to the left of   23
42   24   to the left of   14
43   25   to the left of   14
44   25  to the right of   17
45   25  to the right of    9
46   25   to the left of   23