Are there any cars or bicycles?
No, there are no bicycles or cars.
    src        edge_attr  dst
0     1  to the right of   10
1     3   to the left of    8
2     4  to the right of    8
3     5          wearing   17
4     5       skating on   13
5     5               on   13
6     7  to the right of   15
7     8   to the left of    4
8     8  to the right of    3
9     8   to the left of   19
10    8  to the right of   14
11    8  to the right of   15
12    8  to the right of   17
13    9   to the left of   12
14   10   to the left of    1
15   12  to the right of    9
16   14   to the left of    8
17   15   to the left of    7
18   15   to the left of    8
19   17   to the left of    8
20   19  to the right of    8