Who is hitting the ball?
The boy is hitting the ball.
    src        edge_attr  dst
0     0   to the left of   13
1     2      in front of   17
2     3          hitting    1
3     3      standing in    5
4     3          holding   13
5     3   to the left of   13
6     4  to the right of    6
7     6   to the left of    4
8     7  to the right of   12
9     7  to the right of    8
10    7   to the left of   16
11    7   to the left of   15
12    8  to the right of   17
13    8   to the left of    7
14   10   to the left of   11
15   11  to the right of   10
16   11               of   11
17   12  to the right of   17
18   12   to the left of    7
19   13  to the right of    3
20   13  to the right of    0
21   13   to the left of   16
22   14   to the left of   16
23   15  to the right of    7
24   16  to the right of    7
25   16  to the right of   13
26   16  to the right of   14
27   17           behind    2
28   17   to the left of   12
29   17   to the left of    8