How tall is the small grass?
The grass is short.
    src         edge_attr  dst
0     0           next to    1
1     0              near    1
2     1              near    0
3     2    to the left of   17
4     2    to the left of   11
5     2    to the left of   10
6     3   to the right of    5
7     3   to the right of    4
8     4   to the right of   12
9     4   to the right of   16
10    4    to the left of   14
11    4    to the left of    6
12    4    to the left of    3
13    5           wearing   11
14    5  standing next to   10
15    5           wearing   17
16    5   to the right of   15
17    5   standing beside   10
18    5   to the right of   12
19    5    to the left of    3
20    6   to the right of   16
21    6   to the right of    4
22    7          lying on    0
23    7    to the left of   14
24    7           wearing   16
25    7          lying on   13
26    8            behind   10
27    9   to the right of   15
28   10   to the right of    2
29   10   to the right of   15
30   10       in front of    8
31   10   to the right of   12
32   11   to the right of    2
33   12    to the left of    4
34   12    to the left of    5
35   12    to the left of   10
36   14   to the right of    7
37   14   to the right of    4
38   15    to the left of   10
39   15    to the left of    5
40   15    to the left of    9
41   16    to the left of    4
42   16    to the left of    6
43   17   to the right of    2