What's in front of the grass?
The flowers are in front of the grass.
    src        edge_attr  dst
0     0           behind   12
1     0           behind    4
2     0   to the left of   18
3     0   to the left of   15
4     1   to the left of   11
5     1            above   13
6     1   to the left of    4
7     1   to the left of    2
8     2            above    4
9     2  to the right of    1
10    2      in front of   17
11    2            above   16
12    2      in front of   13
13    2      in front of   14
14    3   to the left of   10
15    3   to the left of   15
16    4            below    2
17    4  to the right of    1
18    4      in front of    0
19    5   to the left of   10
20    6          beneath   16
21    6            below   16
22    8   to the left of   18
23    8  to the right of   17
24    9  to the right of   18
25   10  to the right of    3
26   10  to the right of    5
27   10   to the left of   15
28   11  to the right of    1
29   12   to the left of   15
30   12           behind   17
31   12      in front of    0
32   13           behind    2
33   14           behind    2
34   15  to the right of   10
35   15  to the right of    3
36   15  to the right of   12
37   15   to the left of   18
38   15  to the right of   19
39   15  to the right of    0
40   16            below    2
41   16            above    6
42   17      in front of   12
43   17           behind    2
44   17   to the left of    8
45   18  to the right of   15
46   18  to the right of    0
47   18  to the right of    8
48   18   to the left of    9
49   19   to the left of   15