Four people sitting in the snow at the base of a frozen waterfall.
No people are around.
If four people are sitting in the snow, then there can't be no people around.
exists e1 s1 x1 x2 x3 x4 x5.(n_base(x4) & n_snow(x3) & a_topic(x1) & at(e1,x4) & of(x4,x5) & n_waterfall(x5) & a_frozen(s1) & Theme(s1,x5) & in(e1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_4(x1))
-exists s1 x1.(Theme(s1,x1) & a_around(s1) & n_people(x1))