Which kind of device is to the left of the computer mouse?
The device is a computer.
    src        edge_attr  dst
0     0               on    6
1     1   to the left of    2
2     1            above   10
3     1  to the right of    4
4     2  to the right of    3
5     2  to the right of    1
6     3  to the right of    4
7     3   to the left of    2
8     4   to the left of    1
9     4   to the left of    3
10    4   to the left of    9
11    7   to the left of   10
12    9  to the right of    4
13   10  to the right of    7
14   10            under    1