premise: Four people are cavorting on the rocks at a river's edge
hypothesis: Four people are outside.
explanation_1: As rocks are outside, it means they are outside.
premise_logic: exists e1 x1 x2 x3 x4.(n_rock(x2) & at(e1,x4) & n_edge(x4) & of(x4,x3) & n_river(x3) & on(e1,x2) & Actor(e1,x1) & v_cavort(e1) & n_people(x1) & card_eq_4(x1))
hypothesis_logic: exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_people(x1) & card_eq_4(x1))
premise_sim: exists e1 x1 x2 x3 x4.(v_cavort(e1) & on(e1,x2) & of(x4,x3) & n_rock(x2) & n_river(x3) & n_people(x1) & n_edge(x4) & card_eq_4(x1) & at(e1,x4) & Actor(e1,x1))
hypothesis_sim: exists s1 x1.(n_people(x1) & card_eq_4(x1) & a_outside(s1) & Theme(s1,x1))