premise: A man is tossing a knife in the air while another man stands nearby.
hypothesis: A man prepares to show off his knife-wielding skills
explanation_1: Tossing a knife in the air does not imply that one has knife-wielding skills.
explanation_2: Not all men that toss knives in the air are preparing to show off their knife-wielding skills.
explanation_3: A man can have a knife without having knife-wielding skills.
premise_logic: exists e1 p1 x1 x2 x3.(n_air(x3) & exists e2 s1 x4.(a_nearby(s1) & Manner(e2,s1) & Actor(e2,x4) & v_stand(e2) & n_man(x4) & -(x4 = x1)) & n_man(x1) & n_man(x1) & while(e1,p1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_toss(e1) & n_knife(x2))
hypothesis_logic: exists e1 p1 x1 x2 x3.(Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 s1.(a_off(s1) & Manner(e2,s1) & Theme(e2,x2) & Actor(e2,x1) & v_show(e2)) & n_skill(x2) & of(x2,x3) & n_knife-wielding(x3) & of(x2,x1) & n_male(x1) & n_man(x1))