What is in front of the window?
The tree branches are in front of the window.
    src        edge_attr  dst
0     0   to the left of    5
1     0  to the right of   15
2     1           behind   15
3     2   to the left of   12
4     2  to the right of   14
5     2   to the left of    5
6     2  to the right of   15
7     4  to the right of    6
8     5  to the right of    0
9     5  to the right of    9
10    5  to the right of    2
11    6   to the left of    4
12    6  to the right of   14
13    7  to the right of   14
14    9   to the left of    5
15   11  to the right of   15
16   11  to the right of   14
17   12  to the right of    2
18   13  to the right of   15
19   14   to the left of    6
20   14   to the left of   17
21   14   to the left of    7
22   14   to the left of    2
23   14   to the left of   16
24   14   to the left of   11
25   15   to the left of   17
26   15      in front of    1
27   15   to the left of    2
28   15   to the left of    0
29   15   to the left of   11
30   15   to the left of   13
31   16               on   17
32   16  to the right of   14
33   16               at   10
34   17  to the right of   14
35   17  to the right of   15