Who is wearing a helmet?
The worker is wearing a helmet.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of    3
2     0               by    3
3     2               in    1
4     3           beside   10
..  ...              ...  ...
62   17   to the left of    6
63   17  to the right of   16
64   17   to the left of   14
65   17  to the right of    9
66   18  to the right of    4

[67 rows x 3 columns]