What is the dog in front of?
The dog is in front of the wall.
    src        edge_attr  dst
0     1   to the left of   17
1     1  to the right of    3
2     2  to the right of    8
3     2  to the right of    3
4     2   to the left of   17
..  ...              ...  ...
61   18  to the right of   13
62   18  to the right of    9
63   18  to the right of   15
64   18  to the right of   14
65   18   to the left of   17

[66 rows x 3 columns]