What is the window made of?
The window is made of wood.
    src        edge_attr  dst
0     0  to the right of    1
1     1               of   11
2     1  to the right of    3
3     1   to the left of    0
4     3               in   10
5     3   to the left of    1
6     3   to the left of   11
7     4  to the right of   11
8     6  to the right of   11
9     7   to the left of    8
10    8  to the right of    7
11   11   to the left of    4
12   11  to the right of    3
13   11   to the left of    6