What's the phone on?
The phone is on the desk.
    src        edge_attr  dst
0     0               on    4
1     0   to the left of    1
2     0   to the left of    7
3     0   to the left of   16
4     1               on    4
5     1  to the right of    0
6     1   to the left of   13
7     1  to the right of   12
8     1       sitting on    4
9     2  to the right of    3
10    2  to the right of    8
11    2   to the left of   17
12    2   to the left of   16
13    3   to the left of   16
14    3   to the left of    2
15    3            above    4
16    4            below    3
17    5   to the left of   13
18    5               on    4
19    6               on    4
20    6   to the left of   16
21    7   to the left of   10
22    7   to the left of   11
23    7   to the left of   16
24    7   to the left of   13
25    7  to the right of    0
26    8               on    3
27    8   to the left of    2
28    9   to the left of   11
29    9   to the left of   10
30   10  to the right of    9
31   10  to the right of    7
32   11               on   16
33   11  to the right of    9
34   11  to the right of    7
35   12   to the left of    1
36   12   to the left of   16
37   12   sitting beside    0
38   12               on    4
39   13       sitting on    4
40   13  to the right of    5
41   13               on    4
42   13  to the right of    7
43   13  to the right of    1
44   15       sitting on   17
45   16  to the right of    0
46   16  to the right of    6
47   16  to the right of    7
48   16  to the right of    2
49   16  to the right of   12
50   16  to the right of    3
51   17  to the right of    2