What is the device to the left of the pillows on the couch?
The device is a speaker.
    src        edge_attr  dst
0     0   to the left of    6
1     0  to the right of    7
2     1               on   13
3     1  to the right of   12
4     2           behind   14
5     2  to the right of   12
6     2             near   14
7     2          next to   14
8     3  to the right of    4
9     3               on   10
10    3   to the left of   11
11    4   to the left of   16
12    4  to the right of    9
13    4  to the right of    7
14    4   to the left of    3
15    5             near   16
16    6               on   10
17    6   to the left of   15
18    6          next to   13
19    6  to the right of    0
20    6   to the left of   11
21    7   to the left of    0
22    7   to the left of    4
23    7   to the left of    8
24    7   to the left of   10
25    7   to the left of    9
26    8               on   10
27    8  to the right of    9
28    8  to the right of    7
29    9   to the left of    4
30    9               on   10
31    9  to the right of    7
32    9   to the left of    8
33   10  to the right of    7
34   11      in front of   14
35   11  to the right of    6
36   11  to the right of    3
37   11           behind   16
38   12               on   13
39   12   to the left of    1
40   12   to the left of    2
41   13             near    6
42   14           behind   11
43   14      in front of    2
44   14             near    2
45   15  to the right of    6
46   15               on   11
47   16          next to    5
48   16  to the right of    4
49   16      in front of   11
50   17               on    5