What is the pillowcase on?
The pillow case is on the coffee table.
    src        edge_attr  dst
0     1   to the left of    7
1     1   to the left of   13
2     1   to the left of   12
3     1   to the left of    2
4     2  to the right of    1
5     3       sitting on   13
6     3  to the right of    6
7     3  to the right of    5
8     4   to the left of   14
9     5   to the left of   13
10    5   to the left of    3
11    5  to the right of    8
12    6   to the left of    3
13    7               on    2
14    7   to the left of   13
15    7  to the right of    1
16    8   to the left of    5
17    9   to the left of   16
18    9   to the left of   14
19   12  to the right of    1
20   13  to the right of    5
21   13  to the right of    1
22   13  to the right of    7
23   14  to the right of    4
24   14   to the left of   16
25   14  to the right of    9
26   15               on    5
27   16  to the right of   14
28   16  to the right of    9