What kind of device is on the table?
The device is a calculator.
    src        edge_attr  dst
0     0  to the right of   10
1     1  to the right of   14
2     1  to the right of   13
3     1               in    0
4     1  to the right of   10
5     1  to the right of    6
6     2  to the right of   12
7     3  to the right of   10
8     4  to the right of   10
9     4               in    5
10    5  to the right of   10
11    6   to the left of    1
12    9               on   13
13    9  to the right of   12
14   10   to the left of    1
15   10   to the left of    0
16   10   to the left of    4
17   10   to the left of    5
18   10   to the left of    3
19   11   to the left of   14
20   12   to the left of    2
21   12   to the left of    9
22   13   to the left of    1
23   14  to the right of   11
24   14   to the left of    1