a person snowboarding over a large hump with onlookers in front of him
A surfer falls into the ocean.
A person can not be snowboarding and falling into the ocean at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & over(e1,x3) & with(x3,x4) & in(x4,x5) & of(x5,x1) & n_male(x1) & n_front(x5) & n_onlooker(x4) & n_hump(x3) & a_large(s1) & Theme(s1,x3) & Actor(e1,x2) & v_snowboard(e1) & (x1 = x2) & n_person(x1))
exists e1 x1 x2.(n_ocean(x2) & into(e1,x2) & Actor(e1,x1) & v_fall(e1) & n_surfer(x1))