Where is the fan?
The fan is on the floor.
     src        edge_attr  dst
0      0  to the right of   21
1      0  to the right of   19
2      0  to the right of   25
3      1  to the right of   24
4      1  to the right of   13
..   ...              ...  ...
170   27   to the left of   19
171   27   to the left of   26
172   27   to the left of   25
173   27   to the left of    4
174   27   to the left of   21

[175 rows x 3 columns]