Where is that grass?
The grass is at the hillside.
    src        edge_attr  dst
0     0  to the right of    4
1     2     leaning over    3
2     4   to the left of    8
3     4   to the left of    7
4     4   to the left of    6
5     4   to the left of    0
6     6   to the left of    7
7     6  to the right of    4
8     7  to the right of    8
9     7  to the right of    6
10    7  to the right of    4
11    8   to the left of    7
12    8  to the right of    4
13    9               in    1
14   11               at   12