What is the piece of furniture that is mounted on the wall?
The piece of furniture is a cabinet.
    src        edge_attr  dst
0     1   to the left of   19
1     2           inside    8
2     2   to the left of   10
3     2  to the right of   14
4     2  to the right of    7
5     4   to the left of    9
6     4   to the left of   13
7     4     hanging from    3
8     4   to the left of   15
9     6        on top of   11
10    7           inside    8
11    7   to the left of   10
12    7  to the right of   14
13    7  to the right of    9
14    7   to the left of    2
15    8   to the left of   10
16    8  to the right of   14
17    8  to the right of   15
18    9   to the left of   15
19    9  to the right of    4
20    9   to the left of    7
21   10       mounted on    3
22   10  to the right of   13
23   10  to the right of   14
24   10  to the right of    2
25   10  to the right of    8
26   10  to the right of    7
27   12  to the right of   18
28   12  to the right of   17
29   12  to the right of   20
30   13  to the right of    4
31   13   to the left of   10
32   14   to the left of    8
33   14   to the left of    7
34   14   to the left of   10
35   14   to the left of    2
36   15  to the right of    9
37   15   to the left of    8
38   15  to the right of    4
39   17           inside    6
40   17   to the left of   12
41   17   to the left of   20
42   17  to the right of   18
43   18   to the left of   12
44   18           inside    6
45   18   to the left of   20
46   18   to the left of   17
47   19  to the right of    1
48   20           inside    6
49   20   to the left of   12
50   20  to the right of   17
51   20  to the right of   18