premise: Four people are on a ski slope.
hypothesis: The ski slope is empty.
explanation_1: four people present at the ski slope, means it is impossible for the ski slope to be empty.
premise_logic: exists p1 x1.(exists x2 x3.(on(x1,x2) & n_slope(x2) & of(x2,x3) & n_ski(x3)) & n_people(x1) & card_eq_4(x1))
hypothesis_logic: exists s1 x1 x2.(n_slope(x1) & of(x1,x2) & n_ski(x2) & Theme(s1,x1) & a_empty(s1))
premise_sim: exists x1.(n_people(x1) & exists x2 x3.(on(x1,x2) & of(x2,x3) & n_slope(x2) & n_ski(x3)) & card_eq_4(x1))
hypothesis_sim: exists s1 x1 x2.(of(x1,x2) & n_slope(x1) & n_ski(x2) & a_empty(s1) & Theme(s1,x1))