What are the napkins on?
The napkins are on the tablecloth.
     src       edge_attr  dst
0      0  to the left of   15
1      0  to the left of   11
2      1  to the left of   16
3      1  to the left of   14
4      1  to the left of   18
..   ...             ...  ...
115   24  to the left of    9
116   24  to the left of    8
117   24              on    7
118   24  to the left of    4
119   24  to the left of    3

[120 rows x 3 columns]