premise: A man on a sidewalk is playing the accordion while happy people pass by.
hypothesis: A man on the sidewalk performs a mime act while angry people glare at him
explanation_1: A man is either playing the accordion or performs a mime act while happy people pass by or angry people glare at him.
explanation_2: One cannot perform a mime act while playing an accordion.  Happy and angry are the opposite of each other.
explanation_3: accordion doesn't mean mime, happy doesn't mean angry
premise_logic: exists e1 p1 x1 x2 x3.(n_accordion(x3) & exists e2 s1 s2 x4.(a_by(s2) & Manner(e2,s2) & Actor(e2,x4) & v_pass(e2) & n_people(x4) & a_happy(s1) & Theme(s1,x4)) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & on(x1,x2) & n_sidewalk(x2) & n_man(x1))
hypothesis_logic: exists e1 s1 x1 x2 x3 x4 x5 x6.(n_male(x2) & n_sidewalk(x2) & while(e1,x5) & at(x5,x2) & Time(x5,x6) & n_glare(x6) & n_people(x5) & a_angry(s1) & Theme(s1,x5) & Theme(e1,x3) & Actor(e1,x1) & v_perform(e1) & n_act(x3) & of(x3,x4) & n_mime(x4) & on(x1,x2) & n_man(x1))