What is located on top of the device that is on top of the table?
The screen is on top of the phone.
    src        edge_attr  dst
0     0       printed on    1
1     0  to the right of    2
2     2   to the left of    0
3     3  to the right of   10
4     3  to the right of   12
5     4   to the left of   10
6     4   to the left of   12
7     6  to the right of   12
8     6  to the right of   10
9     7        on top of   18
10    7   to the left of   10
11    7   to the left of   12
12    7   to the left of   14
13   10  to the right of    7
14   10  to the right of   18
15   10  to the right of   14
16   10  to the right of    4
17   10  to the right of   16
18   10   to the left of    6
19   10   to the left of    3
20   10  to the right of   15
21   11  to the right of   13
22   12  to the right of   16
23   12  to the right of    4
24   12  to the right of   14
25   12   to the left of    6
26   12   to the left of    3
27   12  to the right of   18
28   12  to the right of    7
29   13   to the left of   11
30   14  to the right of   16
31   14  to the right of    7
32   14   to the left of   12
33   14   to the left of   10
34   15   to the left of   10
35   15   to the left of   17
36   16   to the left of   14
37   16             near   18
38   16   to the left of   12
39   16   to the left of   10
40   17  to the right of   15
41   18             near   16
42   18        on top of    4
43   18   to the left of   10
44   18   to the left of   12
45   18         lying on   10
46   18        on top of   12
47   19       sitting on    8