Are there any books or helmets in this photo?
Yes, there is a helmet.
    src        edge_attr  dst
0     0  to the right of    4
1     0   to the left of    2
2     2  to the right of    0
3     2  to the right of    4
4     4   to the left of    0
5     4   to the left of    8
6     4   to the left of    2
7     8          wearing    2
8     8  to the right of    4
9     8          wearing    1
10    8          wearing   11