premise: A policeman is directing a crowd of people walking.
hypothesis: There are no crowds walking around.
explanation_1: One says a crowd and the other says no crowd.
explanation_2: Can not have a crowd and no crowds.
explanation_3: A crowd of people walking is not no crowd.
premise_logic: exists e1 e2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_direct(e2) & of(x2,x3) & Actor(e1,x4) & v_walk(e1) & (x3 = x4) & n_people(x3) & n_crowd(x2) & n_policeman(x1))
hypothesis_logic: exists p1 x1.-exists e1 p2 x2 x3.((x1 = x2) & exists s1.(Theme(s1,x3) & a_around(s1)) & Topic(e1,p2) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_crowd(x2))