Who is sitting on the wood chair?
The boy is sitting on the chair.
    src        edge_attr  dst
0     0   to the left of   18
1     0  to the right of   14
2     0               on   13
3     0   to the left of   10
4     1  to the right of   11
..  ...              ...  ...
64   17               of   16
65   18  to the right of   13
66   18               on    2
67   18  to the right of    0
68   18  to the right of   16

[69 rows x 3 columns]