Who is the window before?
The window is in front of the man.
    src        edge_attr  dst
0     0               on    1
1     0  to the right of    4
2     1  to the right of    4
3     1  to the right of    5
4     2   to the left of    7
5     2      in front of    4
6     4           behind    2
7     4   to the left of    0
8     4            using    5
9     4   to the left of    1
10    4   to the left of    7
11    5   to the left of    1
12    6               on    3
13    7  to the right of    2
14    7  to the right of    4