What is on the grass?
The hydrant is on the grass.
    src        edge_attr  dst
0     0  to the right of    2
1     1            under    2
2     1            below    2
3     2               in    1
4     2            above    1
5     2               on    1
6     2   to the left of    4
7     2   to the left of    3
8     2   to the left of    9
9     2   to the left of    0
10    3           behind    9
11    3           behind    5
12    3  to the right of    8
13    3  to the right of    2
14    3  to the right of    6
15    3  to the right of    4
16    4        parked on    0
17    4  to the right of    2
18    4   to the left of    3
19    4   to the left of    5
20    4  to the right of    7
21    4  to the right of    8
22    4   on the edge of    0
23    5      in front of    3
24    5  to the right of    4
25    6   to the left of    9
26    6   to the left of    3
27    7               on    0
28    7   to the left of    8
29    7   to the left of    4
30    7   to the left of    9
31    7       driving on    0
32    8   to the left of    3
33    8               on    2
34    8  to the right of    7
35    8     hanging from    2
36    8   to the left of    4
37    9  to the right of    7
38    9      in front of    3
39    9  to the right of    6
40    9  to the right of    2