Are there bikes or skateboards that are not red?
No, there is a bike but it is red.
    src        edge_attr  dst
0     0   to the left of    6
1     2   to the left of    3
2     2  to the right of    7
3     3               on    4
4     3  to the right of    2
5     3  to the right of    8
6     3  to the right of    7
7     4  to the right of    9
8     4  to the right of    7
9     5   to the left of    6
10    6  to the right of    0
11    6  to the right of    5
12    7   to the left of    4
13    7   to the left of    3
14    7   to the left of    2
15    7   to the left of    8
16    8               on    4
17    8   to the left of    3
18    8  to the right of    7
19    8   to the left of   10
20    9   to the left of    4
21   10  to the right of    8