What device is to the left of the screen?
The device is a phone.
    src        edge_attr  dst
0     0   to the left of    8
1     1   to the left of   20
2     1  to the right of   12
3     2          next to   19
4     2   to the left of   18
5     2             near   19
6     2   to the left of   20
7     3           behind   13
8     3   to the left of   20
9     4   to the left of   20
10    4           behind   13
11    5   to the left of   20
12    5           behind   13
13    6   to the left of   15
14    6         lying on   18
15    7  to the right of   12
16    7   to the left of   20
17    8  to the right of    0
18   11           behind   13
19   12   to the left of    1
20   12   to the left of   18
21   12   to the left of    7
22   12   to the left of   13
23   12   to the left of   20
24   13      in front of    3
25   13   to the left of   20
26   13  to the right of   12
27   13   to the left of   18
28   13      in front of   11
29   13      in front of   17
30   13      in front of    4
31   13      in front of    5
32   15               on   15
33   15  to the right of   18
34   15  to the right of    6
35   16   to the left of   18
36   17           behind   13
37   18   to the left of   15
38   18  to the right of    2
39   18  to the right of   12
40   18  to the right of   13
41   18  to the right of   19
42   18  to the right of   16
43   19          next to    2
44   19   to the left of   20
45   19             near    2
46   19   to the left of   18
47   20  to the right of   19
48   20  to the right of   12
49   20  to the right of    2
50   20  to the right of    1
51   20  to the right of    7
52   20  to the right of    3
53   20  to the right of    4
54   20  to the right of    5
55   20  to the right of   13