What is the piece of furniture that is filled with books called?
The piece of furniture is a bookcase.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of   15
2     0   to the left of   16
3     0   to the left of    4
4     2   to the left of    8
..  ...              ...  ...
70   19  to the right of    9
71   19  to the right of   20
72   20  to the right of   11
73   20   to the left of   19
74   20  to the right of    2

[75 rows x 3 columns]