What is the road made of?
The road is made of brick.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of    6
2     0   to the left of    9
3     1   to the left of    7
4     3   to the left of    7
..  ...              ...  ...
72   18   parked next to    4
73   18   to the left of   10
74   18   to the left of   12
75   18   to the left of    4
76   18   to the left of    7

[77 rows x 3 columns]