What is the chair at, a table or a bed?
The chair is at a table.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of   16
2     0   to the left of    2
3     0   to the left of   12
4     0  to the right of    1
..  ...              ...  ...
78   18  to the right of    8
79   19   to the left of   15
80   20   to the left of    6
81   20   to the left of   15
82   20   to the left of   17

[83 rows x 3 columns]