What is in front of the leafy tree?
The fence is in front of the tree.
    src        edge_attr  dst
0     1           behind    6
1     1  to the right of    7
2     2           behind    4
3     2             near    5
4     2      in front of   11
5     4      in front of    2
6     4   to the left of   10
7     4               in    7
8     5          next to    2
9     6      in front of    1
10    7               on    6
11    7   to the left of    1
12    9   to the left of   10
13   10  to the right of    4
14   10  to the right of    9
15   11           behind    2