premise: Group of people standing and sitting in a field of grass.
hypothesis: They are at the park
explanation_1: Just because they in a field of grass, you cannot infer they are at a park.
explanation_2: grass in not seen only in park.
explanation_3: You can not infer they are at a park.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4 x5.(ne_org_group(s1) & a_topic(s1) & of(s1,x1) & in(e2,x4) & of(x4,x5) & n_grass(x5) & n_field(x4) & Actor(e2,x3) & v_sit(e2) & (x1 = x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1))
hypothesis_logic: exists p1 x1 x2.(n_park(x2) & n_thing(x1) & at(x1,x2))