What is the piece of furniture on the carpet?
The piece of furniture is a chair.
    src        edge_attr  dst
0     0               on   15
1     4   to the left of   18
2     4               on   14
3     5  to the right of   16
4     5   to the left of    9
5     5   to the left of    8
6     5  to the right of   19
7     7               on    7
8     8  to the right of   19
9     8  to the right of    5
10    9  to the right of   19
11    9  to the right of    5
12    9               by   18
13    9               by   14
14   10               on    7
15   10               in    2
16   10   to the left of   13
17   10   to the left of   14
18   11   to the left of   18
19   11   to the left of   19
20   12   to the left of   13
21   12            below   14
22   12            under   14
23   13               by   10
24   13  to the right of   12
25   13  to the right of   10
26   13   to the left of   20
27   14  to the right of   10
28   14            above   12
29   14            above   20
30   15  to the right of   17
31   16   to the left of    5
32   16   to the left of   18
33   16               on   14
34   17   to the left of   15
35   18  to the right of   19
36   18  to the right of    4
37   18  to the right of   11
38   18  to the right of   16
39   18               on   14
40   19               by   11
41   19   to the left of    5
42   19   to the left of    8
43   19   to the left of   18
44   19  to the right of   11
45   19   to the left of    9
46   20               by   14
47   20            under   14
48   20            below   14
49   20  to the right of   13