Which color is the lush grass?
The grass is brown.
    src        edge_attr  dst
0     0      standing on    1
1     4  to the right of   13
2     4  to the right of   12
3     4   to the left of    9
4     7        on top of    2
5     9  to the right of    4
6    10   to the left of   13
7    10   to the left of   12
8    12  to the right of   10
9    12   to the left of    4
10   13  to the right of   10
11   13   to the left of    4