How tall is the brown grass?
The grass is tall.
    src        edge_attr  dst
0     0  to the right of   11
1     0   to the left of    9
2     1  to the right of    8
3     1   to the left of   18
4     1  to the right of   14
5     1   to the left of    7
6     2  to the right of   12
7     2  to the right of   11
8     2  to the right of    4
9     2   to the left of    9
10    3  to the right of   15
11    4   to the left of    2
12    5   to the left of   17
13    6  to the right of   19
14    6  to the right of   11
15    6   to the left of    9
16    7  to the right of    1
17    8   to the left of    1
18    8   to the left of   12
19    9  to the right of    6
20    9  to the right of    0
21    9  to the right of   19
22    9  to the right of    2
23   11   to the left of    6
24   11   to the left of   19
25   11   to the left of    0
26   11   to the left of    2
27   12   to the left of    2
28   12  to the right of    8
29   14   to the left of    1
30   15   to the left of   18
31   15   to the left of    3
32   16   to the left of   18
33   17  to the right of    5
34   18  to the right of   16
35   18  to the right of   15
36   18  to the right of    1
37   19   to the left of    9
38   19   to the left of    6
39   19  to the right of   11