What is the towel hanging on?
The towel is hanging on the sink.
    src        edge_attr  dst
0     0   to the left of   16
1     0  to the right of    1
2     0        on top of    1
3     1               in    4
4     1   to the left of    9
5     1  to the right of   15
6     1   to the left of    8
7     1   to the left of    0
8     5       hanging on    6
9     6  to the right of    7
10    7   to the left of    6
11    8  to the right of   17
12    8  to the right of    1
13    8               on    3
14    9               in    4
15    9  to the right of    1
16   10               on    2
17   10   to the left of   14
18   10               by    9
19   10   to the left of   13
20   11   to the left of   13
21   11   to the left of   14
22   12        on top of    1
23   13  to the right of   10
24   13               on    2
25   13  to the right of   11
26   14  to the right of   11
27   14  to the right of   10
28   15   to the left of    1
29   16  to the right of    0
30   16       hanging on    9
31   17   to the left of    8
32   17   to the left of   18
33   18  to the right of   17