Who is looking at the ball?
The man is looking at the ball.
    src        edge_attr  dst
0     0         swinging    2
1     0          wearing    4
2     0          holding   10
3     0     playing with   10
4     0          holding    2
5     0  to the right of    8
6     0       looking at   10
7     2   to the left of    4
8     2   to the left of    3
9     2   to the left of   11
10    3  to the right of    2
11    4  to the right of    2
12    8   to the left of    0
13    9   to the left of   11
14   11  to the right of    2
15   11  to the right of    9