Is there a bike that is not red?
No, there is a bike but it is red.
    src        edge_attr  dst
0     1   to the left of   18
1     2  to the right of    4
2     2  to the right of    9
3     2   to the left of   11
4     2   to the left of   16
5     2  to the right of    5
6     2   to the left of   17
7     3   to the left of   17
8     3   to the left of   11
9     3  to the right of    9
10    4   to the left of    7
11    4   to the left of    2
12    5   to the left of   16
13    5   to the left of    2
14    5   to the left of    7
15    5   to the left of   17
16    5  to the right of    8
17    7   to the left of   17
18    7   to the left of   16
19    7  to the right of    5
20    7  to the right of    4
21    8   to the left of    5
22    8      in front of   10
23    8   to the left of   10
24    9   to the left of    2
25    9   to the left of    3
26   10   to the left of   14
27   10   to the left of   12
28   10           behind    8
29   10  to the right of    8
30   11  to the right of    2
31   11  to the right of    3
32   12  to the right of   10
33   12  to the right of   17
34   13               on   15
35   13   to the left of   15
36   14  to the right of   10
37   15  to the right of   13
38   16  to the right of    2
39   16  to the right of    5
40   16  to the right of    7
41   17  to the right of    3
42   17  to the right of    2
43   17  to the right of    5
44   17  to the right of    7
45   17   to the left of   12
46   17               on   19
47   18  to the right of    1