A man is standing behind the fish display in the restaurant.
A child is tap-dancing on stage.
Can't be a man and a child at the same time.  Can't be standing and dancing at the same time.
exists e1 x1 x2 x3 x4.(n_restaurant(x4) & n_display(x2) & of(x2,x3) & n_fish(x3) & behind(e1,x2) & in(x2,x4) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2.(on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_tap-dance(e1) & n_child(x1))