Is there a fence that is green?
No, there is a fence but it is black.
     src        edge_attr  dst
0      0   to the left of   23
1      0   to the left of   11
2      1  to the right of    5
3      2   to the left of   19
4      3  to the right of   10
..   ...              ...  ...
98    22  to the right of   15
99    22  to the right of   14
100   22           behind   20
101   23   to the left of    8
102   23  to the right of    0

[103 rows x 3 columns]