What kind of device is on the left of the coffee cup?
The device is a computer mouse.
    src        edge_attr  dst
0     1   to the left of    9
1     1   to the left of   10
2     1             near    6
3     2  to the right of    9
4     2   to the left of   14
5     3  to the right of    5
6     4               on   10
7     4  to the right of   16
8     4               on   16
9     5               on   13
10    5   to the left of   15
11    5   to the left of    3
12    6   to the left of   10
13    6             near    1
14    6   to the left of    9
15    7  to the right of    9
16    7  to the right of   16
17    8  to the right of    9
18    8  to the right of   16
19    9   to the left of    8
20    9   to the left of    2
21    9   to the left of   11
22    9   to the left of   10
23    9  to the right of    1
24    9  to the right of    6
25    9   to the left of    7
26   10  to the right of   16
27   10  to the right of    6
28   10  to the right of    1
29   10  to the right of    9
30   11  to the right of    9
31   11  to the right of   16
32   12  to the right of   15
33   12               on   13
34   14  to the right of    2
35   15   to the left of   12
36   15  to the right of    5
37   16   to the left of   10
38   16   to the left of    4
39   16   to the left of    7
40   16   to the left of    8
41   16   to the left of   11