How tall is the grass by the field?
The grass is short.
    src        edge_attr  dst
0     1  to the right of   12
1     4   to the left of   11
2     6               in    3
3     6               on    3
4     6  to the right of   12
5     8  to the right of   10
6    10   to the left of    8
7    11  to the right of    4
8    12               by    6
9    12   to the left of    6
10   12   to the left of    1
11   13               by    3
12   13               in    3