What is in the napkin dispenser?
The napkins are in the napkin dispenser.
    src        edge_attr  dst
0     0  to the right of   13
1     0   to the left of    3
2     0  to the right of    8
3     2  to the right of   11
4     3  to the right of    7
5     3  to the right of    0
6     4               in    7
7     4  to the right of   13
8     4   to the left of   12
9     4  to the right of    8
10    7   to the left of    3
11    7  to the right of    8
12    7  to the right of   13
13    7   to the left of   12
14    7               on    0
15    8  to the right of   13
16    8   to the left of    7
17    8   to the left of    0
18    8   to the left of    4
19    8               on    0
20    9               on    6
21    9   to the left of   12
22    9  to the right of   11
23   11  to the right of   14
24   11   to the left of    2
25   11   to the left of    9
26   12  to the right of    7
27   12  to the right of    4
28   12  to the right of    9
29   13   to the left of    4
30   13   to the left of    8
31   13   to the left of    0
32   13   to the left of    7
33   14   to the left of   11
34   15  to the right of   16
35   16   to the left of   15
36   16               on   17