Are there either skateboarders or visitors?
No, there are no visitors or skateboarders.
    src        edge_attr  dst
0     0               on    9
1     0   to the left of    9
2     0   to the left of    7
3     1   to the left of    7
4     1   to the left of    6
5     1   to the left of    3
6     2   to the left of    6
7     2   to the left of    5
8     2   to the left of    7
9     3  to the right of    5
10    3  to the right of    4
11    3  to the right of    9
12    3  to the right of    6
13    3  to the right of    1
14    4   to the left of    3
15    4   to the left of    8
16    4   to the left of    7
17    5   to the left of    3
18    5  to the right of    2
19    5   to the left of    6
20    5   to the left of    7
21    6  to the right of    1
22    6  to the right of    2
23    6   to the left of    3
24    6  to the right of    5
25    6   to the left of    8
26    7  to the right of    1
27    7  to the right of    2
28    7  to the right of    5
29    7  to the right of    4
30    7  to the right of    0
31    8  to the right of    6
32    8  to the right of    4
33    8  to the right of    9
34    9   to the left of    8
35    9   to the left of    3
36    9  to the right of    0