In which part of the image is the shelf, the top or the bottom?
The shelf is in the top of the image.
    src        edge_attr  dst
0     0  to the right of   23
1     3  to the right of   23
2     4  to the right of   26
3     4  to the right of   19
4     4  to the right of    8
..  ...              ...  ...
77   26  to the right of   24
78   26   to the left of    4
79   27  to the right of   29
80   27  to the right of   11
81   29   to the left of   27

[82 rows x 3 columns]