Do you see any traffic lights or skis that are green?
Yes, the skis are green.
    src        edge_attr  dst
0     1   to the left of    8
1     2  to the right of   16
2     3   to the left of    8
3     4   to the left of    8
4     5   to the left of    8
5     8  to the right of   15
6     8  to the right of    3
7     8  to the right of    1
8     8  to the right of    5
9     8  to the right of    4
10    8   to the left of   13
11    9   to the left of   13
12    9          wearing    5
13    9          wearing    3
14   11         watching    9
15   13  to the right of    8
16   13  to the right of    9
17   15   to the left of    8
18   16   to the left of    2