What is in front of the building?
The sand is in front of the building.
    src        edge_attr  dst
0     1           behind    8
1     3  to the right of   21
2     3  to the right of   16
3     3  to the right of   15
4     3  to the right of   18
..  ...              ...  ...
58   21   to the left of   16
59   21   to the left of   20
60   21   to the left of   18
61   21   to the left of    6
62   21   to the left of    3

[63 rows x 3 columns]