A surfer is in the air while surfing in the ocean, and there is a foamy wave crashing everywhere.
The surfer is about to fall.
A surfer in the air may be still rising and not about to fall.
exists e1 p1 p2 x1 x2 x3 x4.(n_ocean(x2) & n_air(x4) & exists e2 s1 x5 x6.((x3 = x5) & all x7.(n_location(x7) -> Location(e2,x7)) & Actor(e2,x6) & v_crash(e2) & (x5 = x6) & n_wave(x5) & a_foamy(s1) & Theme(s1,x5)) & while(p1,e1) & in(e1,x2) & Actor(e1,x1) & v_surf(e1) & in(x1,x4) & n_surfer(x1))
exists p1 s1 x1.(n_surfer(x1) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1.(Actor(e1,x1) & v_fall(e1)))