premise: A person rolls down a hill riding a wagon as another watches.
hypothesis: Two people are outside.
explanation_1: A person that rolls while another watches are two people.  A hill is always outside.
explanation_2: Two people are outside, one a person rolling down a hill and other the one watching.
explanation_3: Hills are only found outside.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4 x5.(n_watch(x4) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_ride(e2) & as(x3,x5) & n_watch(x5) & -(x5 = x4) & n_wagon(x3) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_roll(e1) & n_hill(x2) & n_person(x1))
hypothesis_logic: exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_people(x1) & card_eq_2(x1))
premise_sim: exists e2 e1 s1 x1 x2 x3 x4 x5.(v_roll(e1) & v_ride(e2) & n_watch(x5) & n_watch(x4) & n_wagon(x3) & n_person(x1) & n_hill(x2) & for(e1,e2) & as(x3,x5) & a_down(s1) & Theme(e2,x3) & Theme(e1,x2) & Manner(e1,s1) & Actor(e2,x1) & Actor(e1,x1) & -(x5 = x4))
hypothesis_sim: exists s1 x1.(n_people(x1) & card_eq_2(x1) & a_outside(s1) & Theme(s1,x1))