A young man is' heading' a ball while on the beach, another young man, in the background, looks at him.
The young man headed a volleyball.
The young man is in the process of heading the ball, so he has not already headed it.
exists p1 s1 s2 x1 x7 x8.(n_beach(x8) & n_background(x7) & exists x2 x3.((x1 = x2) & all x4.(n_ball(x4) -> exists e1 p2 x5.(exists e2 s3 x6.(on(e2,x8) & at(e2,x1) & Actor(e2,x6) & v_look(e2) & in(x6,x7) & n_man(x6) & a_young(s3) & Theme(s3,x6) & -(x6 = x1)) & while(e1,p2) & Theme(e1,x5) & Actor(e1,x3) & v_head(e1) & for(x5,x4) & n_'(x5))) & (x2 = x3) & n_'(x2)) & n_male(x1) & n_man(x1) & n_man(x1) & a_young(s2) & Theme(s2,x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_man(x1) & a_young(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_head(e1) & n_volleyball(x2))