What is located on top of the gray house?
The window is on top of the house.
    src       edge_attr  dst
0     0  to the left of   19
1     0  to the left of    6
2     0  to the left of    4
3     0  to the left of   12
4     1  to the left of    6
..  ...             ...  ...
75   21  to the left of   20
76   22  to the left of   14
77   23              on   22
78   23  to the left of    8
79   23  to the left of   20

[80 rows x 3 columns]