What items of furniture are it?
The pieces of furniture are beds.
    src        edge_attr  dst
0     1  to the right of    9
1     3   to the left of   10
2     3   to the left of    4
3     3   to the left of   14
4     4  to the right of    3
5     4   to the left of   14
6     7  to the right of   14
7     9   to the left of    1
8    10  to the right of    3
9    12               on   11
10   14  to the right of    4
11   14  to the right of    3
12   14   to the left of    7