Who walks on the street?
The woman walks on the street.
    src        edge_attr  dst
0     2  to the right of    8
1     2  to the right of    4
2     2  to the right of   10
3     3  to the right of    6
4     4   to the left of    2
5     4   to the left of    8
6     4   to the left of    7
7     5   to the left of    6
8     6  to the right of    5
9     6   to the left of    3
10    7  to the right of   10
11    7  to the right of    4
12    8   to the left of    2
13    8  to the right of    4
14    8   to the left of    9
15    9  to the right of    8
16    9  to the right of   10
17   10   to the left of    2
18   10       walking on    1
19   10   to the left of    9
20   10   to the left of    7