premise: A couple walks down the sidewalk.
hypothesis: A man and woman are walking down the sidewalk.
explanation_1: Just because a couple walks down the sidewalk does not imply that a man and woman are walking down the sidewalk.
premise_logic: exists e1 s1 x1 x2.(n_sidewalk(x2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_couple(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(n_sidewalk(x4) & down(e1,x4) & Actor(e1,x1) & v_walk(e1) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
premise_sim: exists e1 s1 x1 x2.(v_walk(e1) & n_sidewalk(x2) & n_couple(x1) & a_down(s1) & Theme(e1,x2) & Manner(e1,s1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3 x4.(v_walk(e1) & subset_of(x3,x1) & subset_of(x2,x1) & n_woman(x3) & n_sidewalk(x4) & n_man(x2) & down(e1,x4) & Actor(e1,x1))