A man is riding the bike without wearing his helmet.
The man is outside on a bike.
Sentence 1 is missing man is outside on a bike.
exists e1 x1 x2 x3.(n_helmet(x3) & of(x3,x2) & n_male(x2) & n_bike(x2) & -exists e2.(manner(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2)) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_man(x1))
exists s1 x1 x2.(n_man(x1) & on(s1,x2) & n_bike(x2) & Theme(s1,x1) & a_outside(s1))