What is the box on?
The box is on the desk.
    src        edge_attr  dst
0     2  to the right of    9
1     2  to the right of    7
2     2   to the left of   11
3     2   to the left of   12
4     2               on    4
5     2  to the right of   10
6     3               on    8
7     3  to the right of    5
8     3  to the right of   13
9     3         lying in   14
10    5      filled with   13
11    5   to the left of    8
12    5   to the left of    3
13    7  to the right of   10
14    7   to the left of    2
15    7   to the left of   12
16    7   to the left of   11
17    8  to the right of    5
18    9               on    4
19    9   to the left of    2
20    9               in    9
21   10               on    0
22   10   to the left of    2
23   10   to the left of    7
24   11  to the right of    2
25   11  to the right of    7
26   12  to the right of    7
27   12  to the right of    2
28   13   to the left of    3