What's the silverware on?
The silverware is on the table cloth.
   src        edge_attr  dst
0    3               on    4
1    4   to the left of    5
2    4   to the left of    6
3    5               on    0
4    5  to the right of    4
5    5           behind    6
6    5   to the left of    6
7    6      in front of    5
8    6  to the right of    5
9    6  to the right of    4