Is that side walk red?
No, the side walk is gray.
    src        edge_attr  dst
0     1   to the left of   17
1     1   to the left of   10
2     1  to the right of    2
3     1   to the left of   14
4     1   to the left of   11
..  ...              ...  ...
89   21  to the right of   14
90   21  to the right of   17
91   21   to the left of   16
92   21  to the right of    7
93   21  to the right of   10

[94 rows x 3 columns]