A man is laying down in the grass.
She is laying down on the ocean.
The subject can not be a man and a she at the same time, while the ocean can not be grass.
exists e1 s1 x1 x2.(n_grass(x2) & in(e1,x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lay(e1) & n_man(x1))
exists e1 s1 x1 x2.(n_ocean(x2) & n_female(x1) & a_down(s1) & Manner(e1,s1) & on(e1,x2) & Actor(e1,x1) & v_lay(e1))