What is the item of furniture to the left of the mat called?
The piece of furniture is a chair.
    src        edge_attr  dst
0     0   to the left of    9
1     0   to the left of    1
2     0   to the left of   12
3     0   to the left of    7
4     1  to the right of    0
5     1   to the left of   11
6     1   to the left of   12
7     1  to the right of    6
8     3   to the left of   16
9     3   to the left of    5
10    3   to the left of    4
11    3   to the left of    9
12    3  to the right of    6
13    3  to the right of    8
14    3   to the left of   10
15    4  to the right of    3
16    4  to the right of   13
17    4  to the right of    5
18    4  to the right of    9
19    5   to the left of   10
20    5  to the right of    3
21    5   to the left of    4
22    6   to the left of    3
23    6   to the left of    1
24    6               on    0
25    6   to the left of    7
26    7  to the right of    6
27    7   to the left of   11
28    7  to the right of    0
29    8   to the left of    3
30    8               on   13
31    9   to the left of   10
32    9   to the left of    4
33    9   to the left of   12
34    9  to the right of    3
35    9  to the right of    0
36   10  to the right of    3
37   10  to the right of   13
38   10  to the right of    5
39   10  to the right of    9
40   11  to the right of    1
41   11  to the right of    7
42   11  to the right of   12
43   12  to the right of    9
44   12  to the right of    1
45   12   to the left of   11
46   12  to the right of    0
47   13   to the left of   16
48   13   to the left of    4
49   13   to the left of   14
50   13   to the left of   10
51   14  to the right of   13
52   16  to the right of   13
53   16  to the right of    3