What is the item of furniture that the pillows are on?
The piece of furniture is a sofa.
    src        edge_attr  dst
0     0  to the right of    8
1     0      in front of    1
2     1           behind    0
3     1  to the right of    8
4     1  to the right of    3
5     2  to the right of    5
6     3             near    8
7     3   to the left of    1
8     3   to the left of    6
9     3  to the right of    8
10    3  to the right of    7
11    4  to the right of    5
12    5   to the left of    4
13    5   to the left of    2
14    6  to the right of    3
15    6  to the right of    8
16    7               on    8
17    7   to the left of    3
18    8   to the left of    3
19    8   to the left of    0
20    8             near    3
21    8   to the left of    1
22    8   to the left of    6