What is in front of the dog that is in front of the person?
The door is in front of the dog.
    src        edge_attr  dst
0     0     reflected in    7
1     0   to the left of    2
2     1  to the right of   16
3     1   to the left of    7
4     2   to the left of    7
..  ...              ...  ...
59   16   to the left of    6
60   16   to the left of    1
61   16   to the left of   14
62   16           behind    7
63   16        on top of   12

[64 rows x 3 columns]