What is in front of the cheese food?
The glass is in front of the pizza.
     src        edge_attr  dst
0      0   to the left of    8
1      0           behind   12
2      0   to the left of   21
3      0  to the right of   20
4      1   to the left of   14
..   ...              ...  ...
110   22   to the left of    8
111   23   to the left of   21
112   23   to the left of    8
113   23               on   22
114   23  to the right of   20

[115 rows x 3 columns]