Is there a horse above the grass?
No, there is an airplane above the grass.
    src        edge_attr  dst
0     0            under    7
1     1           behind    7
2     2  to the right of   11
3     2               of    7
4     2  to the right of   13
5     3           inside    1
6     5               of    7
7     6               of    7
8     7               on    0
9     7      in front of    9
10    7            above    0
11    7      in front of    1
12    9           behind    6
13    9           behind    7
14   11   to the left of    2
15   13               of   11
16   13   to the left of    2