What is the grass in front of?
The grass is in front of the gate.
    src        edge_attr  dst
0     0      in front of    5
1     1   to the left of    2
2     1         close to   10
3     1  to the right of    3
4     2  to the right of    1
5     3         lying in    0
6     3   to the left of    1
7     5  to the right of    9
8     8               on    0
9     8               in    0
10    8         close to    5
11    9           eating    0
12    9               in    0
13    9   to the left of    5
14   11               on    0