A blond girl putting on her helmet.
The girl is taking off a cap.
The girl is either taking off or putting on headwear, which is either a cap or helmet.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_helmet(x3) & of(x3,x1) & n_female(x1) & Actor(e1,x2) & v_put(e1) & (x1 = x2) & n_girl(x1) & a_blond(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_girl(x1) & a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_cap(x2))