premise: A group of people look over ledge.
hypothesis: The group of people are looking up.
explanation_1: Looking over a ledge does not imply they are looking up.
explanation_2: Just because a group of people look over ledge, doesn't mean they are looking up.
explanation_3: You can not infer  they are looking up.
premise_logic: exists e1 x1 x2 x3.(over(e1,x3) & n_ledge(x3) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
hypothesis_logic: exists e1 s1 x1 x2.(n_group(x1) & a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_people(x2))