What is on the table?
The tray is on the table.
     src        edge_attr  dst
0      0  to the right of    8
1      0  to the right of   22
2      0  to the right of   20
3      0   to the left of   10
4      0   to the left of    9
..   ...              ...  ...
156   32   to the left of   10
157   32   to the left of    9
158   32   to the left of    2
159   32   to the left of   17
160   32  to the right of   16

[161 rows x 3 columns]