Is the man in front of the tree standing on a ski?
No, the man is standing on the skateboard.
    src        edge_attr  dst
0     1  to the right of    2
1     2   to the left of    1
2     5           beside    0
3     5           behind    8
4     5  to the right of   10
5     5  to the right of    6
6     6   to the left of    5
7     8        riding on    7
8     8      in front of    5
9     8               on    0
10    8          wearing   10
11    8          wearing   11
12    8      standing on    7
13    8          wearing    6
14    8               in    4
15   10   to the left of    5