premise: Family sitting down in a field of grass while others walk by.
hypothesis: Two parents and two children are sitting in a field of grass.
explanation_1: Family is not always two parents and two children.
explanation_2: Not all families have two parents and two children.
explanation_3: Not all adults are parents.
premise_logic: exists e2 e1 s1 s2 x1 x2 x3 x4 x5.(ne_nam_family(x1) & while(e1,x4) & a_by(s2) & Manner(e2,s2) & Theme(e2,x5) & v_walk(e2) & (x4 = x5) & -(x4 = x2) & n_person(x2) & n_person(x4) & in(e1,x2) & of(x2,x3) & n_grass(x3) & n_field(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))
hypothesis_logic: exists e1 x1 x2 x3 x4 x5.(in(e1,x4) & of(x4,x5) & n_grass(x5) & n_field(x4) & Actor(e1,x1) & v_sit(e1) & n_child(x3) & card_eq_2(x3) & n_parent(x2) & subset_of(x3,x1) & subset_of(x2,x1) & card_eq_2(x1))