A cyclist in a helmet is driving down a slope on his bike.
A cyclist is riding his bike.
A cyclist in a helmet can only be riding his bike.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_bike(x4) & of(x4,x1) & n_male(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_drive(e1) & n_slope(x3) & in(x1,x2) & n_helmet(x2) & n_cyclist(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_cyclist(x1))