A man with his surfboard stands in the sand.
A guy stands on the beach getting ready to surf looking at the waves.
You can stand on the beach and be looking at something other than the waves. For instance, the man could be looking at his car in the parking lot.
exists e1 x1 x2 x3.(n_sand(x3) & in(e1,x3) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_surfboard(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists e2 e1 p1 x1 x2 x3.(n_wave(x3) & n_beach(x2) & for(e1,e2) & exists p2 s1.(Topic(s1,p2) & Actor(s1,x1) & a_ready(s1) & exists e3 p3.(exists e4.(at(e4,x3) & Actor(e4,x1) & v_look(e4)) & Topic(e3,p3) & Actor(e3,x1) & v_surf(e3))) & Topic(e2,p1) & Actor(e2,x1) & v_get(e2) & on(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_guy(x1))