Are there any silver helmets?
No, there is a helmet but it is blue.
    src        edge_attr  dst
0     1   to the left of    6
1     1   to the left of    5
2     1   to the left of   15
3     3  to the right of    9
4     5  to the right of    1
5     6     walking with    3
6     6          wearing   10
7     6          leading    3
8     6          wearing    5
9     6  to the right of    1
10    7   to the left of   11
11    9             near   14
12    9   to the left of    3
13    9   to the left of   10
14   10  to the right of    9
15   10               on    2
16   11  to the right of    7
17   13       covered in   14
18   14             near    9
19   15  to the right of    1