premise: Four people walk across stepping stones in a body of water.
hypothesis: Four people are standing up.
explanation_1: In order for one to walk they must be standing up.
explanation_2: Four people who walk across stepping sones implies that the four people are standing up.
explanation_3: In order for people to walk they must be standing.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_step(e2) & in(x2,x3) & of(x3,x4) & n_water(x4) & n_body(x3) & n_stone(x2) & a_across(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & card_eq_4(x1))
hypothesis_logic: exists e1 s1 x1.(a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_4(x1))