Which kind of furniture is above the mug?
The piece of furniture is a shelf.
    src        edge_attr  dst
0     0            above   15
1     0  to the right of   12
2     0  to the right of    9
3     0  to the right of   16
4     0  to the right of    8
5     2   to the left of    5
6     2               on    3
7     2  to the right of   13
8     2   to the left of   17
9     2  to the right of   11
10    4  to the right of   16
11    5  to the right of    7
12    5  to the right of   10
13    5  to the right of    2
14    5  to the right of    6
15    5  to the right of   15
16    6   to the left of    5
17    7   to the left of    5
18    7  to the right of   11
19    8   to the left of    0
20    8               on   13
21    8   to the left of   15
22    9   to the left of   15
23    9   to the left of    0
24   10   to the left of    5
25   11   to the left of    2
26   11   to the left of    7
27   11               on    3
28   12   to the left of    0
29   13   to the left of   15
30   13   to the left of    2
31   15  to the right of    9
32   15  to the right of   13
33   15            below    0
34   15  to the right of   16
35   15   to the left of    5
36   15  to the right of    8
37   15               in    1
38   16   to the left of    4
39   16   to the left of   15
40   16   to the left of    0
41   17  to the right of    2