What is on the bookshelf to the left of the keyboard?
The books are on the bookshelf.
    src        edge_attr  dst
0     0        on top of    5
1     0   to the left of    9
2     0   to the left of   16
3     1        on top of    5
4     2        on top of    5
..  ...              ...  ...
58   21  to the right of   13
59   21   to the left of   18
60   21   to the left of   19
61   22   to the left of   16
62   22   to the left of    9

[63 rows x 3 columns]