What's in front of the building?
The bus is in front of the building.
     src        edge_attr  dst
0      0  to the right of   19
1      0   to the left of   20
2      0   to the left of    1
3      0  to the right of   22
4      0   to the left of    7
..   ...              ...  ...
112   22   to the left of    1
113   23   to the left of    7
114   23   to the left of   15
115   23  to the right of   14
116   23   to the left of    0

[117 rows x 3 columns]