What's the cake on?
The cake is on the table.
     src       edge_attr  dst
0      0  to the left of   21
1      0              on   10
2      0  to the left of   20
3      1  to the left of    8
4      1  to the left of    7
..   ...             ...  ...
223   27  to the left of   25
224   27  to the left of   26
225   27  to the left of    9
226   27  to the left of   17
227   27  to the left of   18

[228 rows x 3 columns]