A man snowboarding down a mountain.
The man has on goggles.
Not all snowboarders wear goggles.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_snowboard(e1) & n_mountain(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & on(e1,x2) & n_goggles(x2) & Actor(e1,x1) & v_have(e1))