premise: 3 girls chatting and laughing on the stairwell.
hypothesis: Girls are at school.
explanation_1: Just because the girls are chatting and laughing on the stairwell does not mean they are at school.
explanation_2: Just because 3 girls are chatting and laughing on the stairwell it does not mean the girls are at school.
explanation_3: The girls could have been at multiple places that has a stairwell other than school.
premise_logic: exists e2 e1 x1 x2 x3.(n_stairwell(x3) & on(e2,x3) & Actor(e2,x2) & v_laugh(e2) & n_girl(x2) & n_date(x2) & a_date_day_03(x2) & a_date_day_03(x2) & Actor(e1,x1) & v_chat(e1) & n_girl(x1) & n_date(x1) & a_date_day_03(x1) & a_date_day_03(x1))
hypothesis_logic: exists p1 x1.(exists x2.(at(x1,x2) & n_school(x2)) & n_girl(x1))
premise_sim: exists e2 e1 x1 x2 x3.(v_laugh(e2) & v_chat(e1) & on(e2,x3) & n_stairwell(x3) & n_girl(x2) & n_girl(x1) & n_date(x2) & n_date(x1) & a_date_day_03(x2) & a_date_day_03(x1) & Actor(e2,x2) & Actor(e1,x1))
hypothesis_sim: exists x1.(n_girl(x1) & exists x2.(n_school(x2) & at(x1,x2)))