Two people are standing on a hill overlooking rolling green grass.
Two people a laying down looking at the sky.
If people are standing up, they cannot be laying down.
exists e1 e2 s1 s2 x1 x2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_overlook(e2) & n_grass(x3) & a_green(s2) & Theme(s2,x3) & a_rolling(s1) & Theme(s1,x3) & on(e1,x2) & n_hill(x2) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_2(x1))
exists x3.(n_sky(x3) & all s1 x1.((n_lay(x1) & a_down(s1) & Theme(s1,x1)) -> exists e1 x2.(at(e1,x3) & Actor(e1,x2) & v_look(e1) & for(x2,x1) & n_people(x2) & card_eq_2(x2))))