What is the chopstick on?
The chopstick is on the plate.
   src        edge_attr  dst
0    0  to the right of    1
1    1   to the left of    0
2    1  to the right of    2
3    2               in    1
4    2   to the left of    1
5    3  to the right of    4
6    4               on    3
7    4   to the left of    3
8    6               on    5
9    6               in    1