What color is the stop sign, white or red?
The stop sign is white.
    src        edge_attr  dst
0     0  to the right of    4
1     1  to the right of    8
2     1   to the left of    9
3     2  to the right of    3
4     2   to the left of   10
5     3   to the left of    2
6     3   to the left of    8
7     4   to the left of    0
8     6               on    4
9     7  to the right of    8
10    7               on    5
11    8  to the right of    3
12    8   to the left of    7
13    8   to the left of    1
14    9  to the right of    1
15   10  to the right of    2