On which side is the shelf?
The shelf is on the left of the image.
     src        edge_attr  dst
0      0   to the left of   20
1      1  to the right of   17
2      1  to the right of   11
3      1  to the right of   10
4      1               of    1
..   ...              ...  ...
114   23   to the left of    3
115   23   to the left of   22
116   23   to the left of   10
117   23   to the left of    7
118   23   to the left of    8

[119 rows x 3 columns]