What kind of device is hanging on the wall?
The device is a phone.
    src        edge_attr  dst
0     1  to the right of    7
1     2   to the left of    5
2     2  to the right of    4
3     2   to the left of   13
4     2   to the left of   16
..  ...              ...  ...
64   17   to the left of    3
65   18  to the right of    6
66   18  to the right of    9
67   18  to the right of    4
68   19   to the left of   11

[69 rows x 3 columns]