What item of furniture is the lamp on?
The lamp is on the bed.
   src        edge_attr  dst
0    1  to the right of    4
1    2               on    4
2    3               on    4
3    3             near    4
4    3   to the left of    4
5    3               on    0
6    4             near    3
7    4   to the left of    1
8    4  to the right of    3