Are there any radiators under the window?
No, there is a chair under the window.
     src        edge_attr  dst
0      0   to the left of   20
1      0   to the left of   17
2      0  to the right of   19
3      0   to the left of   12
4      0   to the left of   14
..   ...              ...  ...
265   34  to the right of   21
266   34   to the left of   17
267   34   to the left of   20
268   34   to the left of    3
269   34   to the left of   29

[270 rows x 3 columns]