Which color is the side walk?
The side walk is green.
    src        edge_attr  dst
0     2   to the left of    7
1     4  to the right of    5
2     5  to the right of   10
3     5   to the left of    4
4     6  to the right of    9
5     7          wearing   11
6     7  to the right of    2
7     7          wearing    5
8     7          wearing    4
9     7          wearing    3
10    9   to the left of    6
11   10   to the left of    5