What device is it?
The device is a camera.
    src        edge_attr  dst
0     0   to the left of   13
1     0          holding    4
2     0      in front of    9
3     1   to the left of   13
4     2   to the left of   12
5     2  to the right of   10
6     3   to the left of   12
7     4   to the left of    8
8     4  to the right of   16
9     4   to the left of    5
10    5  to the right of    8
11    5  to the right of    4
12    6   to the left of   12
13    6   to the left of    7
14    6  to the right of   10
15    7               on   11
16    7  to the right of   15
17    7  to the right of    9
18    7   to the left of   13
19    7  to the right of    6
20    8  to the right of    4
21    8   to the left of    5
22    9   to the left of   12
23    9   to the left of    7
24   10   to the left of   15
25   10   to the left of   11
26   10   to the left of    6
27   10   to the left of    2
28   11  to the right of   16
29   11  to the right of   10
30   12  to the right of   15
31   12  to the right of    9
32   12  to the right of    2
33   12  to the right of   14
34   12  to the right of    3
35   12  to the right of    6
36   12               on   11
37   13  to the right of    1
38   13  to the right of    7
39   13  to the right of    0
40   14   to the left of   12
41   15  to the right of   10
42   15   to the left of    7
43   15   to the left of   12
44   16   to the left of   11
45   16   to the left of    4