premise: A group of people dressed in formal wear pose for a picture.
hypothesis: Wedding party portrait with bride and groom.
explanation_1: You can not infer they are a wedding party.
explanation_2: The first sentence does not indicate that there is a wedding party, or that a bride or groom are involved.
explanation_3: Not every group of people in formal wear are a wedding party.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5.(for(e2,x5) & n_picture(x5) & Actor(e2,x1) & v_pose(e2) & of(x1,x2) & in(e1,x4) & n_wear(x4) & a_formal(s1) & Theme(s1,x4) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x3) & n_groom(x5) & n_bride(x4) & subset_of(x5,x3) & subset_of(x4,x3) & n_portrait(x1) & of(x1,x2) & n_party(x2) & Actor(e1,x1) & v_wed(e1))
premise_sim: exists e1 e2 s1 x1 x2 x3 x4 x5.(v_pose(e2) & v_dress(e1) & of(x1,x2) & n_wear(x4) & n_picture(x5) & n_people(x2) & n_group(x1) & in(e1,x4) & for(e2,x5) & a_formal(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e2,x1) & (x2 = x3))
hypothesis_sim: exists e1 x1 x2 x3 x4 x5.(with(x1,x3) & v_wed(e1) & subset_of(x5,x3) & subset_of(x4,x3) & of(x1,x2) & n_portrait(x1) & n_party(x2) & n_groom(x5) & n_bride(x4) & a_topic(x1) & Actor(e1,x1))