Two people are on a snow-covered mountain.
People sitting on the beach.
One cannot be on both a snow-covered mountain and a beach simultaneously. Also, whereas there are two people on a snow-covered mountain, the plural "people" on the beach could refer either to two people or any number greater than one.
exists p1 x1.(exists s1 x2.(on(x1,x2) & n_mountain(x2) & a_snow-covered(s1) & Theme(s1,x2)) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_beach(x3) & a_topic(x1) & on(e1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))