Is the grass brown or is it green?
The grass is green.
    src        edge_attr  dst
0     1   to the left of   11
1     1  to the right of   10
2     1  to the right of    6
3     2  to the right of    8
4     2  to the right of   12
5     3               on    4
6     3   to the left of    7
7     4   to the left of    7
8     6   to the left of    1
9     6  to the right of   10
10    7  to the right of    3
11    7  to the right of    4
12    8   to the left of    2
13    8  to the right of   12
14   10   to the left of    6
15   10             near   12
16   10   to the left of    1
17   11  to the right of    1
18   12   to the left of    2
19   12   to the left of    8
20   12             near   10
21   12   to the left of   13
22   13  to the right of   12