Which kind of furniture is to the left of the cup?
The pieces of furniture are couches.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    4
2     0   to the left of   16
3     1       sitting on    0
4     1          wearing    5
5     1   to the left of   14
6     1          wearing    7
7     1   to the left of    2
8     1   to the left of    9
9     1          playing    4
10    1   to the left of   16
11    2  to the right of    1
12    2  to the right of   10
13    2  to the right of    9
14    2  to the right of   14
15    2          playing    4
16    4  to the right of    0
17    4  to the right of    5
18    4  to the right of   12
19    5   to the left of    4
20    5   to the left of   16
21    6  to the right of   14
22    6  to the right of   10
23    6  to the right of    9
24    7  to the right of    0
25    7   to the left of   16
26    9          wearing   14
27    9  to the right of    1
28    9   to the left of    6
29    9   to the left of   15
30    9  to the right of   13
31    9   to the left of    2
32   10   to the left of    6
33   10   to the left of    2
34   10   to the left of   15
35   11  to the right of   15
36   12   to the left of    4
37   12   to the left of   16
38   13   to the left of   16
39   13   to the left of    9
40   14  to the right of    1
41   14   to the left of    6
42   14   to the left of    2
43   15  to the right of   10
44   15  to the right of    9
45   15   to the left of   11
46   16  to the right of    0
47   16  to the right of   13
48   16  to the right of    5
49   16  to the right of    1
50   16  to the right of    7
51   16  to the right of   12