What is the sidewalk made of?
The sidewalk is made of brick.
    src        edge_attr  dst
0     0          wearing    3
1     0   to the left of   10
2     0          wearing   15
3     0  to the right of    5
4     0   to the left of   13
..  ...              ...  ...
76   22  to the right of    5
77   22  to the right of    7
78   23  to the right of    7
79   23  to the right of    6
80   23   to the left of   16

[81 rows x 3 columns]