What is the device to the right of the book on the left side?
The device is a keyboard.
   src        edge_attr  dst
0    0  to the right of    2
1    0  to the right of    7
2    1   to the left of    2
3    1            above    8
4    2  to the right of    1
5    2   to the left of    0
6    2  to the right of    8
7    7   to the left of    0
8    8   to the left of    2
9    8            under    1