Where is the grass?
The grass is on the beach.
    src        edge_attr  dst
0     0   to the left of    6
1     2             near    7
2     3  to the right of   11
3     4               in    1
4     4   to the left of   10
5     5             near   11
6     5               by   11
7     6  to the right of    0
8     7             near    2
9     8               on    2
10    9               in    1
11   10               in    1
12   10  to the right of    4
13   11   to the left of    3
14   11               on    2
15   11             near    5
16   11  to the right of   13
17   12               on    2
18   13   to the left of   11