Who is wearing a hat?
The boy is wearing a hat.
    src edge_attr  dst
0     0        of    4
1     2        on    4
2     3        on    4
3     7        of    4
4    13        on    4
5    13   wearing    9
6    13   wearing    3
7    13   wearing    2
8    13   wearing    8
9    13   wearing   14
10   13   wearing   10