Are there both controllers and bookcases in this photo?
No, there is a bookcase but no controllers.
     src        edge_attr  dst
0      0  to the right of   15
1      0   to the left of    3
2      0  to the right of   21
3      1   to the left of   21
4      1   to the left of   12
..   ...              ...  ...
147   25  to the right of   26
148   26  to the right of   20
149   26   to the left of   25
150   26  to the right of   11
151   26  to the right of   19

[152 rows x 3 columns]