What device is to the left of the monitor?
The device is a laptop.
   src        edge_attr  dst
0    2   to the left of   10
1    2   to the left of    9
2    5               on    1
3    6       stacked on    7
4    8               on    3
5    8   to the left of    9
6    9  to the right of    8
7    9  to the right of    2
8   10  to the right of    2