What color is the bike on the path?
The bike is black.
    src        edge_attr  dst
0     0             near    4
1     0            above    4
2     0   to the left of    1
3     0               on    3
4     1               on    4
5     1  to the right of    0
6     1  to the right of    3
7     2               on    4
8     3             near    4
9     3   to the left of    1
10    4            below    0
11    4             near    3
12    4             near    0