Who is wearing a cap?
The boy is wearing a cap.
    src        edge_attr  dst
0     1  to the right of    4
1     3               in    0
2     3       sitting in    0
3     3          wearing   11
4     3          wearing    1
5     3          wearing    6
6     4   to the left of   11
7     4   to the left of    1
8     5  to the right of   12
9     6  to the right of   12
10    6  to the right of   13
11    7               of    3
12    9  to the right of   12
13   11  to the right of    4
14   12   to the left of    5
15   12   to the left of    6
16   12   to the left of    9
17   13   to the left of    6
18   13               of    3