What is the napkin on, a desk or a bed?
The napkin is on a desk.
    src        edge_attr  dst
0     0   to the left of   11
1     1   to the left of    4
2     1   to the left of   10
3     2   to the left of   11
4     2               on    3
5     2  to the right of    7
6     3               on    9
7     3  to the right of    7
8     3   to the left of   11
9     4  to the right of   10
10    4  to the right of    1
11    4               on    9
12    5  to the right of    7
13    6   to the left of   11
14    7   to the left of    2
15    7   to the left of    3
16    7   to the left of    5
17    7   to the left of    8
18    8  to the right of    7
19   10   to the left of    4
20   10               on    9
21   10  to the right of    1
22   11  to the right of    6
23   11               on    9
24   11  to the right of    2
25   11  to the right of    3
26   11  to the right of    0