Is the grass green or brown?
The grass is brown.
    src        edge_attr  dst
0     0               in    1
1     3  to the right of   12
2     5   to the left of    7
3     5   to the left of   13
4     5  to the right of   11
5     7  to the right of   13
6     7  to the right of    5
7    11  to the right of   12
8    11   to the left of    5
9    12   to the left of   11
10   12   to the left of    3
11   13   to the left of    7
12   13  to the right of    5