Who is in front of the men that are wearing a helmet?
The catcher is in front of the men.
    src        edge_attr  dst
0     0   to the left of   17
1     1  to the right of   21
2     2   to the left of    7
3     2   to the left of   17
4     4   to the left of   21
5     4   to the left of   17
6     4   to the left of    7
7     5   to the left of   10
8     7  to the right of   15
9     7  to the right of    4
10    7  to the right of   18
11    7   to the left of   17
12    7   to the left of    8
13    7  to the right of    2
14    8  to the right of    9
15    8  to the right of    7
16    9   to the left of   17
17    9   to the left of    8
18   10  to the right of   21
19   10  to the right of    5
20   13  to the right of   16
21   15   to the left of   21
22   15   to the left of   17
23   15   to the left of    7
24   16   to the left of   13
25   16  to the right of   21
26   17  to the right of    9
27   17  to the right of    7
28   17  to the right of    4
29   17  to the right of   15
30   17  to the right of    2
31   17  to the right of    0
32   17  to the right of   18
33   18           behind   21
34   18   to the left of   21
35   18   to the left of   17
36   18   to the left of    7
37   18          wearing   15
38   18          wearing    2
39   18          wearing    4
40   19               of   20
41   21      in front of   18
42   21  to the right of   15
43   21  to the right of    4
44   21   to the left of   16
45   21   to the left of    1
46   21  to the right of   18
47   21          wearing    7
48   21   to the left of   10