What is the pitcher throwing?
The pitcher is throwing the baseball.
    src        edge_attr  dst
0     1  to the right of    9
1     1  to the right of    7
2     2  to the right of    8
3     2  to the right of    7
4     2  to the right of    3
5     3   to the left of    2
6     3  to the right of    7
7     3  to the right of    4
8     4   to the left of    8
9     4   to the left of    3
10    5         throwing   10
11    5               on    2
12    6  to the right of    9
13    6  to the right of    7
14    7      in front of    7
15    7           behind    7
16    7   to the left of    2
17    7   to the left of    1
18    7   to the left of    6
19    7   to the left of    3
20    7   to the left of   12
21    7   to the left of    8
22    8  to the right of    7
23    8  to the right of    9
24    8          holding   13
25    8               on   11
26    8  to the right of    4
27    8   to the left of    2
28    9   to the left of    1
29    9   to the left of    6
30    9   to the left of    8
31   12  to the right of    7