What are the officers to the left of the man wearing?
The officers are wearing helmets.
    src        edge_attr  dst
0     0  to the right of    7
1     1             with    4
2     1   to the left of    6
3     2   to the left of    5
4     3  to the right of    7
5     4   to the left of    6
6     5          holding    0
7     5  to the right of    2
8     5  to the right of    7
9     5  to the right of    6
10    6               on    7
11    6          wearing    8
12    6   to the left of    9
13    6   to the left of    5
14    6  to the right of    4
15    6  to the right of    1
16    7   to the left of    3
17    7   to the left of    0
18    7   to the left of    9
19    7   to the left of    5
20    9  to the right of    7
21    9  to the right of    6