How tall is the grass?
The grass is tall.
    src        edge_attr  dst
0     0      in front of    4
1     0           behind   10
2     0           behind   16
3     0           behind    5
4     1  to the right of    6
5     1  to the right of    2
6     1  to the right of    9
7     2   to the left of    1
8     2   to the left of    6
9     3               on    5
10    4   growing behind    0
11    4           behind    0
12    5      in front of    0
13    5      standing on   14
14    5          wearing    3
15    5      in front of   16
16    5  to the right of   10
17    6  to the right of    9
18    6  to the right of    2
19    6   to the left of    1
20    6               on    5
21    7               of    5
22    8  to the right of   10
23    9   to the left of    6
24    9   to the left of    1
25   10   to the left of   21
26   10               on   18
27   10   to the left of    8
28   10   to the left of    5
29   10   to the left of   15
30   10   to the left of   11
31   10   to the left of   19
32   10      in front of    0
33   10   to the left of   16
34   11  to the right of   10
35   13   to the left of   21
36   13   to the left of   23
37   13   to the left of   19
38   15  to the right of   10
39   16  to the right of   10
40   16      in front of    0
41   16           behind    5
42   19  to the right of   10
43   19               on    5
44   19  to the right of   13
45   20               on    5
46   21               on    5
47   21   to the left of   23
48   21  to the right of   13
49   21  to the right of   10
50   22               on    5
51   23  to the right of   21
52   23  to the right of   13