Which side of the photo are the books on?
The books are on the right of the image.
     src        edge_attr  dst
0      0  to the right of    6
1      0  to the right of   23
2      0  to the right of    1
3      1   to the left of    0
4      2  to the right of   12
..   ...              ...  ...
101   24  to the right of    5
102   24  to the right of    9
103   24  to the right of   11
104   24  to the right of   14
105   25   to the left of   21

[106 rows x 3 columns]