Are there both grass and sand in the image?
Yes, there are both grass and sand.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of   10
2     0  to the right of    7
3     1  to the right of   11
4     1  to the right of    2
5     1  to the right of    5
6     2   to the left of    1
7     3   to the left of   10
8     3   to the left of    7
9     4   to the left of    8
10    5   to the left of    8
11    5   to the left of    1
12    5   to the left of    0
13    7   to the left of    8
14    7  to the right of   12
15    7   to the left of    0
16    7  to the right of    3
17    8  to the right of    7
18    8  to the right of    4
19    8  to the right of    5
20    8  to the right of   12
21    8  to the right of   10
22   10   to the left of    8
23   10   to the left of    0
24   10  to the right of    3
25   11   to the left of    1
26   12   to the left of    8
27   12   to the left of    7