Who is in front of the mountain?
The snowboarder is in front of the mountain.
    src        edge_attr  dst
0     1            above    2
1     2               on    9
2     2      in front of    6
3     2          wearing    8
4     2          wearing    7
5     2          wearing    3
6     2        riding on    9
7     2  to the right of    6
8     3   to the left of    8
9     3   to the left of    7
10    3   to the left of    9
11    4               on    5
12    6   to the left of    2
13    7  to the right of    3
14    8  to the right of    3
15    9  to the right of    3