Is the color of the window different than the fridge?
No, both the window and the fridge are white.
    src        edge_attr  dst
0     0        on top of    8
1     1  to the right of    5
2     1  to the right of    2
3     2   to the left of    1
4     2   to the left of   10
5     2   to the left of    3
6     3  to the right of    6
7     3  to the right of    2
8     3  to the right of    5
9     3  to the right of    9
10    5   to the left of    1
11    5   to the left of    3
12    6         covering    9
13    6   to the left of   10
14    6   to the left of    3
15    9   to the left of   10
16    9   to the left of    3
17    9       covered by    6
18   10  to the right of    9
19   10  to the right of    2
20   10  to the right of    6